decided

UK: /dɪˈsaɪdɪd/ US: /dɪˈsaɪdɪd/ ,(di sī′did)

From the verb decide: (⇒ conjugate)

decided is: ⓘ

v past

v past p

WordReference Random House Learner's Dictionary of American English © 2025

de•cid•ed /dɪˈsaɪdɪd/   adj. 

1. [before a noun] clear and obvious;
   not ambiguous:
   a decided improvement.
2. free from hesitation;
   determined:
   dealing with her problems in a decided way.

de•cid•ed•ly, adv. 

: The economy has become decidedly worse.

WordReference Random House Unabridged Dictionary of American English © 2025

de•cid•ed  (di sī′did), adj. 

1. in no way uncertain or ambiguous;
   unquestionable;
   unmistakable:
   a decided victory.
2. free from hesitation or wavering;
   resolute;
   determined:
   a decided approach to a problem.

• decide + -ed² 1780–90

de•cid′ed•ly, adv. 
de•cid′ed•ness, n. 
Synonyms

• 1. . undeniable, indisputable, positive, certain, pronounced, definite, sure, indubitable.
• 2. . resolved, unhesitating, unwavering.

Antonyms

• 1, 2. . uncertain.

Collins Concise English Dictionary © HarperCollins Publishers::

decided / dɪˈsaɪdɪd/ adjective (prenominal)

1. unmistakable
2. determined; resolute: a girl of decided character

deˈcidedly adverb

WordReference Random House Learner's Dictionary of American English © 2025

de•cide /dɪˈsaɪd/   v., -cid•ed, -cid•ing. 

1. to conclude (a dispute) by awarding victory to one side;
   settle: [ ~ + obj]:
   to decide an argument.
   [ ~ + for/against/in favor of + obj]:
   decided in favor of the plaintiff.
2. to choose;
   make up one's mind:
   [~ + to + verb] decided to learn how to type faster.
   [ ~ + (that) clause]:
   She decided that she would stay.
3. [ ~ + obj + to + verb] to bring (a person) to a decision;
   persuade or convince:
   What decided you to take the job?

See -cide-¹. Related Words

decide is a verb, decisive is an adjective, decision is a noun:
He can't decide what to eat for breakfast. He's not very decisive when he needs to take action. He made a decision about what to eat for breakfast.

WordReference Random House Unabridged Dictionary of American English © 2025

de•cide  (di sīd′), v., -cid•ed, -cid•ing. 
v.t. 

1. to solve or conclude (a question, controversy, or struggle) by giving victory to one side:
   The judge decided the case in favor of the plaintiff.
2. to determine or settle (something in dispute or doubt):
   to decide an argument.
3. to bring (a person) to a decision;
   persuade or convince:
   The new evidence decided him.

v.i. 

4. to settle something in dispute or doubt:
   The judge decided in favor of the plaintiff.
5. to make a judgment or determine a preference;
   come to a conclusion.

• Latin dēcīdere literally, to cut off, equivalent. to dē- de- + -cīdere (combining form of caedere to cut)
• Middle French decider
• Middle English deciden 1350–1400

de•cid′er, n. 
Synonyms

• 1. Decide, resolve, determine imply settling upon a purpose and being able to adhere to it. To decide is to make up one's mind as to what shall be done and the way to do it:
  He decided to go today.
  To resolve is to show firmness of purpose:
  He resolved to ask for a promotion.
  To determine is to make up one's mind and then to stick to a fixed or settled purpose:
  determined to maintain his position at all costs.

Collins Concise English Dictionary © HarperCollins Publishers::

decide / dɪˈsaɪd/ verb

1. (may take a clause or an infinitive as object; when intr, sometimes followed by on or about) to reach a decision: decide what you want, he decided to go
2. (transitive) to cause (a person) to reach a decision
3. (transitive) to determine or settle (a contest or question)
4. (transitive) to influence decisively the outcome of (a contest or question)
5. (intr; followed by for or against) to pronounce a formal verdict

Etymology: 14th Century: from Old French decider, from Latin dēcīdere, literally: to cut off, from caedere to cut