Synonyms of the word

ad-lib

• v. To improvise all or part of a speech or other performance, especially in comedy.

comment

• n. A spoken remark.
• n. (programming) A remark in source code which does not affect the behavior of the program.
• v. (transitive) To remark.
• v. (intransitive, with "on" or "about") To make remarks or notes.
• v. (transitive, obsolete) To comment or remark on.
• v. (transitive, software, of code) To insert comments into (source code).
• v. (transitive, software, of code) To comment out (code); to disable by converting into a comment.

do

• v. (auxiliary) A syntactic marker.
• v. (transitive) To perform; to execute.
• v. (obsolete) To cause, make (someone) (do something).
• v. (intransitive, transitive) To suffice.
• v. (intransitive) To be reasonable or acceptable.
• v. (transitive) To have (as an effect).
• v. (intransitive) To fare; to succeed or fail.
• v. (transitive, chiefly in questions) To have as one's job.
• v. To perform the tasks or actions associated with (something).
• v. To cook.
• v. (transitive) To travel in, to tour, to make a circuit of.
• v. (transitive) To treat in a certain way.
• v. (transitive) To work for or on, by way of caring for, looking after, preparing, cleaning, keeping in order,…
• v. (intransitive, obsolete) To act or behave in a certain manner; to conduct oneself.
• v. (transitive) (see also do time) To spend (time) in jail.
• v. (transitive) To impersonate or depict.
• v. (transitive, slang) To kill.
• v. (transitive, slang) To deal with for good and all; to finish up; to undo; to ruin; to do for.
• v. (informal) To punish for a misdemeanor.
• v. (transitive, slang) To have sex with. (See also do it).
• v. (transitive) To cheat or swindle.
• v. (transitive) To convert into a certain form; especially, to translate.
• v. (transitive, intransitive) To finish.
• v. (Britain, dated, intransitive) To work as a domestic servant (with for).
• v. (archaic, dialectal, transitive, auxiliary) Used to form the present progressive of verbs.
• v. (stock exchange) To cash or to advance money for, as a bill or note.
• v. (informal, transitive) To make or provide.
• v. (informal, transitive) To injure (one's own body part).
• v. (transitive) To take drugs.
• v. (idomatic, transitive, in the form be doing [somewhere]) to have a purpose or reason.
• n. (colloquial) A party, celebration, social function.
• n. (informal) A hairdo.
• n. (colloquial, obsolete) A period of confusion or argument.
• n. Something that can or should be done (usually in the phrase dos and don'ts).
• n. (obsolete) A deed; an act.
• n. (archaic) ado; bustle; stir; to-do.
• n. (obsolete, Britain, slang) A cheat; a swindler.
• n. (music) A syllable used in solfège to represent the first and eighth tonic of a major scale.
• adv. (rare) Abbreviation of ditto.

execute

• v. (transitive) To kill as punishment for capital crimes.
• v. (transitive) To carry out; to put into effect.
• v. (transitive) To perform.
• v. (transitive) To cause to become legally valid.
• v. (transitive, computing) To start, launch or run.

extemporaneous

• adj. without preparation or advanced thought; offhand.

extemporary

• adj. Extemporaneous.

extempore

• adj. carried out with no preparation; impromptu.
• adv. without preparation; extemporaneously.
• n. Something improvised.

extemporise

• v. (intransitive) To do something, particularly to perform or speak, without prior planning or thought; to…
• v. (intransitive) To do something in a makeshift way.
• v. (transitive) To make or create extempore.
• v. (transitive, music) To compose extemporaneously or improvise.

extemporize

• v. (intransitive) To do something, particularly to perform or speak, without prior planning or thought; to…
• v. (transitive) To do, create, improvise, adapt, or devise in an impromptu or spontaneous manner.

impromptu

• adj. Improvised; without prior preparation, planning or rehearsal; extemporaneous; unplanned.
• n. (music) a short musical composition for an informal occasion often with the character of improvisation…
• n. any composition, musical or otherwise, that is created on the spot without preparation.

improvise

• v. To make something up or invent it as one goes on; to proceed guided only by imagination, instinct, and…

improvize

• v. (rare, proscribed) Alternative spelling of improvise.

off-the-cuff

• adj. (idiomatic) Extemporaneous; without prior preparation; spontaneous; impromptu.

offhand

• adj. without planning or thinking ahead.
• adj. careless; without sufficient thought or consideration.
• adj. curt, abrupt, unfriendly.
• adv. right away, immediately, without thinking about it.
• adv. in an offhand manner.

offhanded

• adj. in a casual or curt style, without preparation or thought; Impromptu, offhand.

perform

• v. To do something; to execute.
• v. To do something in front of an audience, often in order to entertain it.

remark

• n. Act of pointing out or attentively noticing; notice or observation.
• n. The expression, in speech or writing, of something remarked or noticed; a mention of something worth attention…
• n. A casual observation, comment, or statement.
• n. (engraving) Alternative form of remarque.
• v. (intransitive) To make a remark or remarks; to comment.
• v. (transitive) To mark in a notable manner; to distinguish clearly; to make noticeable or conspicuous; to…
• v. (transitive) To take notice of, or to observe, mentally.
• v. (transitive) To express in words or writing, as observed or noticed; to state; to say; -- often with a…
• n. Alternative spelling of re-mark.
• v. Alternative spelling of re-mark.

spontaneous

• adj. Self-generated; happening without any apparent external cause.
• adj. Done by one's own free choice, or without planning.
• adj. proceeding from natural feeling or native tendency without external or conscious constraint.
• adj. arising from a momentary impulse.
• adj. controlled and directed internally; self-active; spontaneous movement characteristic of living things.
• adj. produced without being planted or without human labor; indigenous.
• adj. Random.
• adj. Sudden, without warning.

unprepared

• adj. Not prepared; caught by surprise.
• n. A black mark given to a pupil who arrives at a lesson without the necessary items or preparation.

unrehearsed

• adj. Not rehearsed.

unscripted

• adj. Not scripted; without a script.
• adj. (by extension) Unplanned, unexpected, spontaneous.

unwritten

• adj. Not written.
• adj. Oral or otherwise communicated without writing.
• adj. Implicit or understood but not formally articulated.
• adj. Containing no writing; blank.
• v. past participle of unwrite.