simple past tense and past participle of commence

The first existence of anything; act or fact of commencing; the beginning. / The day when degrees are conferred by colleges and universities upon students and others.

A series of comments or annotations; especially, a book of explanations or expositions on the whole or a part of some other work.

A person who comments; especially someone who is paid to give his/her opinions in the media about current affairs, sports, etc.

Worthy of commendation; deserving praise; admirable, creditable, or meritorious.

(ecology) Of a form of symbiosis in which one organism derives a benefit while the other is unaffected. / Eating at the same table.

(ecology) An organism partaking in a commensal relationship. / One who eats at the same table.

(idiomatic) An "official" refusal to relay any further information, used for example in response to a question by a newspaper reporter or police officer.

(US, sports) At a sporting event, a member of the radio or television announcing team who assists a play-by-play announcer. Provides insight into strategy, player performance, background information, etc., and often light humor.

Able to be measured using a common standard. / Related in size or scale; commensurate or proportionate. / (mathematics) (of two or more numbers) Divisible by the same number ᵂᴾ