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Which of these is a synonym for "astute"?

• Naive
• Shrewd
• Arrogant
• Stubborn

Someone who is "astute" is clever and has good judgment. "Astute" (from Latin) is a formal and flattering adjective for someone with a good head on their shoulders. A synonym is "shrewd," although the latter differs in placing more emphasis on hardheadedness than on sensitivity. Besides "shrewd," other synonyms are "perceptive" (emphasizing insight) and "discerning" (emphasizing an ability to distinguish).

Source: Vocabulary.com

What is the meaning of "aft", in the context of sailing?

• Above the waterline
• Towards the stern
• Below the waterline
• Towards the bow

"Aft", in nautical terminology, is an adjective or adverb meaning towards the stern (rear) of the ship, aircraft, or spacecraft, when the frame of reference is within the ship, headed at the fore. For example, "Able Seaman Smith; lie aft!" or "What's happening aft?". The corresponding adjective in distinguishing one feature of the vessel from another is "after". Its antonym is "forward". The corresponding preposition is "abaft". The difference between "aft" and "stern" is that aft is the inside (on board) rearmost part of the vessel, while stern refers to the outside (offboard) rearmost part of the vessel. The stern is opposite the bow, the outside (offboard) of the front of the boat. The term derives from the Old English æftan (“behind”).

Source: Wikipedia

What is the opposite of 'convex'?

• Concave
• Round
• Triangular
• Square

Concave and convex are literal opposites—one involves shapes that curve inward and the other involves shapes that curve outward. The terms can be used generally, but they’re often used in technical, scientific, and geometric contexts. Lenses, such as those used in eyeglasses, magnifying glasses, binoculars, and cameras are often described as concave or convex, depending on which way they curve. In geometry, both words can be used to describe the shape of polygons, depending on whether they have any inward-facing angles.

Source: Dictionary.com

Which of these terms is the opposite of "rigid"?

• Fast
• Dense
• Flexible
• Coarse

According to Definitions and the American Heritage Unabridged Dictionary of the English Language, the dictionary definition of the word "rigid" is an adjective that describes things with little bend or flexibility. Something rigid is stiff and unbending. That could describe something physical like a helicopter rotor, stiff lenses, or an airship, or it could refer to something more figurative, like circumstances or infinite values. Numerous different words have the opposite meaning of this word. Some antonyms of "rigid" are "flexible," "malleable," and "adaptable," among others.

Source: The Word Counter

What's the term for a word that is the opposite of another word?

• Antonym
• Palindrome
• Homonym
• Synonym

An antonym is a word that means the opposite of another word. For example, hot and cold are antonyms, as are good and bad. Antonyms can be all types of words: verbs, nouns, adjectives, adverbs, and even prepositions. The term antonym comes from antonymy, which is the technical grammar term for words that have contradictory meanings—but you can think of antonyms as opposites. Antonyms are closely related to synonyms, which are words that have identical meanings. While antonyms have opposite meanings, synonyms have the same meaning.

Source: Grammarly

Which term means "the removal of a limb"?

• Amputation
• Pathology
• Anesthesia
• Effusion

Amputation is the removal of a limb by trauma, medical illness, or surgery. As a surgical measure, it is used to control pain or a disease process in the affected limb, such as malignancy or gangrene. In some cases, it is carried out on individuals as a preventive surgery for such problems. A special case is that of congenital amputation, a congenital disorder, where fetal limbs have been cut off by constrictive bands.

Source: Wikipedia

Which word means your lookalike or double?

• Doppelganger
• Specter
• Poltergeist
• Wunderkind

A doppelgänger (literally "double-walker") or doppelganger is a biologically unrelated look-alike, or a double, of a living person. In fiction and mythology, a doppelgänger is often portrayed as a ghostly or paranormal phenomenon and is usually seen as a harbinger of bad luck. Other traditions and stories equate a doppelgänger with an evil twin. In modern times, the term twin stranger is occasionally used. The word "doppelgänger" is often used in a more general and neutral sense, and in slang, to describe any person who physically resembles another person.

Source: Wikipedia

Which of these is a synonym for "bellicose"?

• Aggressive
• Little
• Tasty
• Adorable

The word "bellicose" is an adjective that means feeling or displaying an eagerness to fight. For example, "They are bellicose hockey players who seem to spend more time fighting than playing." Some synonyms and similar words to bellicose are aggressive, militant, hostile, belligerent, warlike, contentious, assaultive, confrontational, pugnacious, and combative, among others.

Source: Merriam-Webster

In medical terms, what does the suffix "-cyte" mean?

• Lack Of
• Losing
• Cell
• Softening

A suffix denoting a cell. Derived from the Greek "kytos" meaning "hollow, as a cell or container." From the same root come the prefix "cyto-" and the combining form "-cyto" which similarly denote a cell. Cyto-, -cyto- and -cyte enter into many words and terms used in medicine, including adipocyte, agranulocytosis, cytogenetics, cytokine, cytomegalovirus, cytometry.

Source: RxList

What word means "understood without being expressed directly"?

• Tacit
• Hostile
• Generic
• Overt

Tacit is an adjective that means understood without being expressed directly. Examples: He gave tacit approval to the plan. Elementary impairments may cause language deficits, or they may also play a role in language development remaining tacit. This discussion is of fundamental importance to archaeology and beyond it: it can prevent a tacit commercial or political exploitation of the past.

Source: Cambridge Dictionary

What term describes when the President refuses to enact legislation?

• Veto
• Override
• Adjournment
• Impeachment

A veto is a legal power to unilaterally stop an official action. In the most typical case, a president or monarch vetoes a bill to stop it from becoming law. In many countries, veto powers are established in the country's constitution. Veto powers are also found at other levels of government, such as in state, provincial, or local government, and in international bodies.

Source: Wikipedia

What does the word "gigantic" mean?

• Very fast
• Very old
• Very small
• Very large

Gigantic is an adjective used to describe something that's very large, as though it were made for a giant. You might call a skyscraper a gigantic building, especially if it towers over other buildings nearby. As you might imagine, gigantic is derived from the noun giant. Giants were mythical beings that were said to be of immense size and strength. Literally, gigantic means “of or relating to a giant,” but in practice gigantic is widely used to describe almost anything as especially big. If an article of clothing is way too big for you, you could call it gigantic. You might also complain of having a gigantic headache because someone is being a gigantic pain.

Source: Vocabulary

Which term means how often something happens?

• Frequency
• Recipe
• Formula
• Equation

Frequency is the number of occurrences of a repeating event per unit of time. It refers to how often an event occurs within a given period. It is also occasionally referred to as temporal frequency for clarity and is distinct from angular frequency. Frequency is measured in hertz (Hz) which is equal to one event per second. The period is the interval of time between events, so the period is the reciprocal of the frequency.

Source: Wikipedia

Which of these words is a synonym of "brave"?

• Bearhearted
• Horsehearted
• Lionhearted
• Tigerhearted

If you're lionhearted, you're very brave. A fearless woman who jumps into a writhing pit of snakes to save a small dog could be called lionhearted (or foolish). Anyone who displays the courage of a lion is lionhearted, from firefighters willing to risk their lives to save other people to a shy child who walks bravely into a new school on her own, determined to make friends. The adjective lionhearted shows up in many works of literature, and history as well — the most famous person described this way was King Richard I of England, called Richard the Lionheart because of his bravery in war.

Source: Vocabulary

Which term means a group of islands in a sea?

• Batholith
• Archipelago
• Alluvium
• Aspect

An archipelago sometimes called an island group or island chain is a chain, cluster, or collection of islands, or sometimes a sea containing a small number of scattered islands. Examples of archipelagos include: the Indonesian Archipelago, the Andaman and Nicobar Islands, the Lakshadweep Islands, the Galápagos Islands, the Japanese Archipelago, the Philippine Archipelago, the Maldives, the Balearic Isles, the Bahamas, the Aegean Islands, the Hawaiian Islands, the Canary Islands, Malta, the Azores, the Canadian Arctic Archipelago, the British Isles, the islands of the Archipelago Sea, and Shetland.

Source: Wikipedia

In grammar, what is the term for a word that connects words or sentences?

• Conjunction
• Pronoun
• Adjective
• Verb

In grammar, a conjunction is a part of speech that connects words, phrases, or clauses that are called the conjuncts of the conjunctions. That definition may overlap with that of other parts of speech, and so what constitutes a "conjunction" must be defined for each language. In English, a given word may have several senses, and be either a preposition or a conjunction depending on the syntax of the sentence. For example, after is a preposition in "he left after the fight" but is a conjunction in "he left after they fought". In general, a conjunction is an invariable (non-inflected) grammatical particle that may or may not stand between the items conjoined. A conjunction may also be placed at the beginning of a sentence: "But some superstition about the practice persists."

Source: Wikipedia

What does the verb "ameliorate" mean?

• Break
• Improve
• Congratulate
• Run

The verb ameliorate comes from the Latin word "meliorare", meaning “improve.” Food drives can ameliorate hunger. An air conditioner can ameliorate the discomfort of a stiflingly hot summer day. A sympathy card can ameliorate grief. Family therapy can ameliorate severe sibling rivalry. Anything that can lift a burden or make something better can ameliorate it.

Source: Vocabulary

Which sociological term means a mark of disgrace?

• Stagnation
• Stigma
• Stoicism
• Standard

Social stigma is the disapproval of, or discrimination against, an individual or group based on perceived characteristics that serve to distinguish them from other members of a society. Social stigmas are commonly related to culture, gender, race, socioeconomic class, age, sexual orientation, body image, intelligence or lack thereof, and health. Stigma can also be against oneself, stemming from negatively viewed personal attributes in a way that can result in a "spoiled identity" (i.e., self-stigma).

Source: Wikipedia