SuaviloquyToday’s word

cooperate

Coöperate, v. i. [imp. & p.p. Coöperated; p.pr. & vb.n. Coöperating.]

Etymology: [L. coöperatus, p.p. of coöperari to coöperate; co + operari to work, opus work. See Operate.]

To act or operate jointly with another or others; to concur in action, effort, or effect. Whate'er coöperates to the common mirth. Crashaw.

Shades of meaning

Fernald has no entry of its own for cooperate; he lists it under help.

Where he writes about it:

In law to aid or abet makes one a principal. (Compare synonyms for accessory.) To cooperate is to aid as an equal; to assist implies a subordinate and secondary relation. — from help

Synonyms

helpabetaidassistbefriendencouragefostersecondstand bysuccorsupportsustainuphold

Antonyms

counteractdiscourageopposeresistthwartwithstand

etymologyWebster’s online