ACT Vocabulary List part 3

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Decipher: to interpret the meaning, usually of a code or hard-to-read handwriting

Decompose: to disintegrate into components

De-emphasize: to minimize the importance

Defection: withdrawing one's support; to escape or become a traitor

Deform: to disfigure; to ruin the shape of an object

Degree: one in a series of steps in a process or scale; a unit of measurement

Delegate: (v.) to transfer responsibilities to another; (n.) a personal representative

Deliberate: (adj.) carefully planned out; (v.) to consider carefully

Delve: to deeply and thoroughly search

Demean: to reduce in worth

Demise: the end of existence

Demur: to express opposition

Derive: to infer certain knowledge; to trace the origin or development of something

Descend: to come from a particular origin; to move down from a higher point

Descendant: a person, animal, or plant that can be traced back to a certain origin; future or subsequent generations

Deter: to prevent from taking a particular course of action

Determinant: the difference between multiplied terms in a matrix

Deviation: a divergence from a certain path; in mathematics: the difference, especially the absolute difference, between one number in a set and the mean of the set

Devise: (v.) to design or create; often confused with the noun device, which means "tool that fulfills a certain purpose"

Diagonal: a line segment joining two nonadjacent vertices of a polygon or solid (polyhedron)

Diffusion time: the time that it takes for a material to spread from one area to another

Diligent: continuously putting in great effort

Dilute: to weaken the strength of a solution

Diminish: to make smaller, decrease, or lessen

Directly proportional: increasing or decreasing together or with the same ratio

Disavow: to deny knowledge of, responsibility for, or association with

Discern: to differentiate or distinguish; to perceive

Discomforting: embarrassing

Disconcerting: unsettling

Discriminatory: showing a bias

Disdainful: scornful and sneering

Dispel: to rid one's mind of; to drive out

Disperse: to scatter or spread out everywhere

Disquieting: lacking peace of mind; mental unrest

Dissolution: the process of dissolving or disintegrating

Dissolve: to pass into or become part of; to terminate

Distinct: easily distinguishable from others

Dominant: the most prominent; exuding authority

Dowry: in certain cultures, the money, goods, and so on, that a woman brings to a marriage

Drag force: the frictional force that resists or slows down motion through a medium such as air

Drastic: extreme

Durable: resistant to wear

Durable goods: in economics, goods that are not depleted with use, such as household appliances or cars


Ecology: the field of science that concentrates on relationships between organisms and their environments

Elaborate: (adj.) rich with detail and well developed; (v.) to expand on the idea of something

Electorate: the body of all of the people who possess the right to vote

Eloquent: very clear and precise; quality of being skilled in clear and precise speech

Emanant: something such as a gas or odor coming forth and off of a source

Embalm: to maintain a dead body by treating it with chemical preservatives

Embittered: possessing bitter feelings

Embrace: to enclose in one's arms; become accepting of other ideas or people

Emigration: leaving one country and traveling to live in another

Emissions: things that are discharged (often gases into the air)

Emit: to release particles such as light, heat, gases

Empowered: possessing the necessary abilities for a particular task; given power or authority

Emulate: to follow an admirable example; imitate

Emulsion: a state in which one liquid is suspended in another because the liquids will not dissolve in one another

Endorsement: a guarantee to support; a signature on a document such as a check

Endow: to give a positive trait; to provide monetary funds by donation

Endpoints: what defines the beginning and end-of-line segment

Endure: to continue despite difficulty; to tolerate

Enrich: to improve

Enshrine: to enclose in a shrine or place of devotion

Entangle: to twist and tie up in a complicated manner

Enumerate: to state things in a list

Envision: to picture a mental image

Eon: duration of time, so long it cannot be measured

Epic: (n.) widely celebrated literary work that has survived a long period of time; (adj.) very impressive and extraordinary

Epicanthic fold: a fold of skin of the upper eyelid that only partly covers the eye's inner corner

Equilibrium: a state of balance

Erosion: the wearing away of an object by outside forces, like wind or water

Error: a mistake; the difference between a computed value and the correct value

Escapist: one who mentally leaves the real world for a world of fantasy

Essence: important characteristics that help differentiate something; the key element of an idea; something spiritual; a scent

Essential: (adj.) the quality of being indispensable or necessary

Essentially: at the very core

Establish: to create a foundation

Ethical: in line with what is right and wrong

Ethnicity: cultural and racial association

Evaporate: to draw away moisture and convert into vapor

Exceed: to go far beyond a limit; excel

Exceptional: rare due to uncommonly great qualities

Exhibit: (v.) to display; (n.) something that is displayed; (n.) a piece of evidence submitted to a court during a trial

Expatriate: (v.) to banish someone; (v.) to move from one's native land; (n.) one who lives in a foreign country

Experimental variables: elements of an experiment that are changed (distinguished from the constant, which is held the same in order to produce significant results)

Expertise: skill or knowledge in a certain area

Exquisite: characterized by great beauty and intricacy

Extensive: detailed and far-reaching

Extinct: no longer existing

Extrapolate: to guess by inferring from known information

Extravagant: lavish beyond the norm

Exultant: gleeful because of success

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