Using Prefixes, Suffixes, and Roots to Identify Synonyms - ISEE Middle Level Verbal Reasoning

“Redoubtable” is an adjective that means “formidable” when referring to a person, so we need to pick out an answer choice that means something like “formidable.” That means that “pathetic” cannot be the correct answer, because “pathetic” means “arousing pity,” making it a near antonym, not a synonym, of “redoubtable.” “Daunting,” however, is an adjective that means “intimidating,” and because “daunting” is the answer choice closest in meaning to “redoubtable,” “daunting” is the correct answer.

When someone "surpasses" something such as a world record in running, it means they "exceed" the previously set limit or expectation. The other answer chocies are as follows: to "summit" is to reach the peak; to "regress" is to go backwards; to "undermine" is to weaken; and to "neutralize" is to counteract.

"Notify" is a verb meaning_inform_ or bring to the attention of, so the answer choice closest in meaning is "inform" a verb that means notify. Considering the other choices, none are close in meaning to "notify": "bother," when used as a verb, means annoy; "rest," when used as a verb, means relax and take a break in order to regain energy; and "provide" means give.

The word "specify" is related to the word "species." Although we use this in biology to discuss particular classes of animals, the word "species" has a broader definition that comes from its use in logic. When we talk about a general class of things, we call that its "genus." (We do this in biology as well.) The members of that general class are its "species." They are "specific" members—you can see how all of these words are related. When something is "specified," it is pointed out, or made specific and thus can be said to be "identified." This is the best option among those provided. Do not be tricked by "recognize," which is close in meaning to this but not exactly the same. Something can be recognized without being specifically identified.

The Greek prefix micro- means very small, as in "microscope" which is a tool used to look at things that are very small. So, "microscopic" means tiny, very, very small. To provide additional help, "susceptible" means vulnerable, at risk; "immune" is an antonym of "susceptible" it means not vulnerable, cannot be affected by (usually a disease); "massive" means very large; "gorgeous" means beautiful, attractive.

The Greek prefix melan- means black, dark, so "melancholy" means a dark mood, sadness, depression, misery. Additionally, the other four answer choices all mean deep happiness.

The Greek prefix opt- means eyes, sight, or related to sight. So, "optical" means of or relating to sight. The synonym here is not perfect, but sometimes you have to find the answer that is "closest" to the word in question.

The Greek prefix pater- means father, so "paternity" means fatherhood. The Greek prefix mater- means mother, so "maternity" means motherhood. Another example of a pater- word is "patriarch" which refers to a man in charge of a group.

The Greek prefix idio- means unusual, weird, distinct, as in "idiot." So, an "idiosyncrasy" is an unusual personality trait, a quirk. Additionally, a "hint" is a clue; "patriotism" is love of one's country; "xenophobia" is fear of foreigners; "compassion" is warmth, generosity, and kindness.

The Greek prefix ethno- means race, so an "ethnicity" is a race of people. Other examples of ethno- words include "ethnic" which means racial and "ethnology" the study of different races. It is worth noting that the suffix -ology means study of.

"Apathetic" is an adjective that means "showing or feeling no interest, enthusiasm, or concern," so we need to pick out an answer choice that means something like "unconcerned." "Concerned" cannot be the correct answer, then, because "concerned" is an antonym of "unconcerned." "Indifferent," however, is an adjective that can mean "having no particular interest or sympathy; unconcerned," and because it is the answer choice that is closest in meaning to "apathetic," "indifferent" is the correct answer.

"Apathy" means indifference or lack of interest, so "indifference" is the correct answer

The word "biological" refers to living things. The best choice is "alive" as it is a part of the definition of "biological." Considering the other choices, "math" refers to _mathematical operations, "_biology" is a branch of science concerned with living creatures, and "sleepy" means exhausted or tired.

An "autobiography" is a written, first person account of someone's life written by that person, so "memoir," which means a written, first person account of some event, is the correct answer, because both an "autobiography" and a "memoir" are written, first person accounts of real events. As for the other answer choices, a "documentary" is a film exploring a factual issue, a "recital" is a musical performance, and "fiction" can mean the genre of written works that concern events that have not actually happened.

"Antithesis" means an opposite, so "opposite" is the correct answer.

"Antipathy" means a strong feeling of dislike. To provide further help, a "miscreant" is someone who behaves badly; "abhorrent" means grotesque and hateful; "sympathy" is a feeling of sorrow for someone else's feelings; "apathy" means not caring.

"Hyperbole" is exaggeration of something. The best choice is "exaggeration" because it is a part of the definition of "hyperbole." Considering the other choices, "coax" means urge, "conduit" means a pipe or tube for moving liquids from one location to another, and "hear" means listen to.

An “antecedent” is something that comes before, a forerunner. The prefix ante- means before, preceding, as seen in “antebellum” which means before the Civil War. To provide further help, “obsolete” means no longer needed or of any use; “antiquated” means obsolete, ancient; “nomadic” and “itinerant” are two words used to describe wandering people who do not have a fixed home.

The prefix "hyper_-" usually means super, excessive, or a lot of, so “hyperbole” is the literary device of dramatically overstating something. To provide further help, “overwhelming” means overpowering, too much, or extremely large, and “underwhelming” means too little or disappointing. Notice how the prefixes "hyper-" and "over-" are similar to one another, and opposites of the prefix "under-_."

The word fragment "morph­"refers to form or shape,and the prefix "a-" means without,so “amorphous” means without form, or _formless.To provide further help, “aimless” means without direction or purpose, and “hopeless” means without love. (Observe the meaning of the suffix "-less"—without.) "Converted" means changed from one thing to another; and "solidified" means having attained a solid shape or_strengthened.