adjective \ˈapt\

Definition of apt

  1. 1 :  unusually fitted or qualified :  ready proved an apt tool in the hands of the conspirators

  2. 2a :  having a tendency :  likely plants apt to suffer from droughtb :  ordinarily disposed :  inclined apt to accept what is plausible as true

  3. 3 :  suited to a purpose; especially :  being to the point an apt quotation

  4. 4 :  keenly intelligent and responsive an apt pupil


play \ˈap(t)-lē\ adverb


play \ˈap(t)-nəs\ noun

liable vs. apt

Both liable and apt when followed by an infinitive are used nearly interchangeably with likely. Although conflicting advice has been given over the years, most current commentators accept apt when so used. They generally recommend limiting liable to situations having an undesirable outcome, and our evidence shows that in edited writing it is more often so used than not.

Examples of apt in a sentence

  1. Stripe is an apt name for the cat, since she has striped fur.

  2. that dog is apt to run off if you don't put him on a leash

Origin and Etymology of apt

Middle English, from Latin aptus, literally, fastened, from past participle of apere to fasten; akin to Latin apisci to grasp, obtain, apud near, Hittite ḫap- to attach

First Known Use: 14th century

Synonym Discussion of apt

fit, suitable, meet, proper, appropriate, fitting, apt, happy, felicitous mean right with respect to some end, need, use, or circumstance. fit stresses adaptability and sometimes special readiness for use or action. fit for battle suitable implies an answering to requirements or demands. clothes suitable for camping meet suggests a just proportioning. meet payment proper suggests a suitability through essential nature or accordance with custom. proper acknowledgement appropriate implies eminent or distinctive fitness. an appropriate gift fitting implies harmony of mood or tone. a fitting end apt connotes a fitness marked by nicety and discrimination. apt quotations happy suggests what is effectively or successfully appropriate. a happy choice of words felicitous suggests an aptness that is opportune, telling, or graceful. a felicitous phrase

quick, prompt, ready, apt mean able to respond without delay or hesitation or indicative of such ability. quick stresses instancy of response and is likely to connote native rather than acquired power. quick reflexes a keen quick mind prompt is more likely to connote training and discipline that fits one for instant response. prompt emergency medical care ready suggests facility or fluency in response. backed by a pair of ready assistants apt stresses the possession of qualities (such as intelligence, a particular talent, or a strong bent) that makes quick effective response possible. an apt student her answer was apt and to the point




Definition of apt

  1. 1 apartment

  2. 2 aptitude

APT Defined for English Language Learners



adjective \ˈapt\

Definition of apt for English Language Learners

  • : likely to do something : having a tendency to do something

  • : appropriate or suitable

  • : quick to learn

APT Defined for Kids


adjective \ˈapt\

Definition of apt for Students

  1. 1 :  having a tendency :  likely He is apt to become angry over small things.

  2. 2 :  just right :  suitable an apt reply

  3. 3 :  quick to learn a student apt in arithmetic





Word Root of apt

The Latin word aptus, meaning “fit” or “suitable,” gives us the root apt or ept. Words from the Latin aptus have something to do with being fitting or suitable. Something apt fits just right into a situation. To adapt is to change in order to fit a situation better. Someone who is adept has suitable skills to perform a task well, while someone who is inept does not.

Seen and Heard

What made you want to look up apt? Please tell us where you read or heard it (including the quote, if possible).


to cast off or become cast off

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