COACT
coact
(verb) act together, as of organisms
Source: WordNet® 3.1
Etymology 1
Verb
coact (third-person singular simple present coacts, present participle coacting, simple past and past participle coacted)
(obsolete) To compel, constrain, force.
Adjective
coact (comparative more coact, superlative most coact)
(obsolete) Forced, constrained, done under compulsion.
Etymology 2
Verb
coact (third-person singular simple present coacts, present participle coacting, simple past and past participle coacted)
(rare) To work together.
Synonyms
• to cooperate
Source: Wiktionary
Co*act", v. t. Etym: [L. coactare, intens. fr. cogere, coactum, to
force. See Cogent.]
Definition: To force; to compel; to drive. [Obs.]
The faith and service of Christ ought to be voluntary and not
coacted. Foxe.
Co*act", v. i. Etym: [Pref. co- + act, v.i.]
Definition: To act together; to work in concert; to unite. [Obs.]
But if I tell you how these two did coact. Shak.
Source: Webster’s Unabridged Dictionary 1913 Edition