In a manner which removes or rejects all doubt; positively, decidedly. Obsolete.

Conclusively, decisively, convincingly.

Expressly, distinctly; directly.

In a definite manner; determinately, precisely.

So as to (finally) settle or decide a matter, question, etc.; decisively, conclusively; so as to preclude question, doubt, or alteration…

Positively, formally; confirmedly.

In a categorical manner; with absolute assertion, absolutely, positively, unconditionally.

Conclusively; so as to (finally) settle a matter or question. Also: resolutely; firmly.

Conclusively, with finality. Obsolete.

definitely, precisely.

Conclusively, decisively.

by way of decision; decisively, conclusively; (also occasionally) = decidedly, adv. 1a.

Directly; expressly. Cf. signanter, adv.

In a conclusive manner; so as to conclude or decide the question or matter; decisively, finally.

Qualifying an adjective: distinctly, markedly; in a pronounced manner. Also: extremely, very.

Distinctly; markedly; = decidedly, adv. 1a.

in a catechetical manner; in the authoritative manner of a catechism.

slang (chiefly U.S.). As an intensifier, forming nonstandard grammatical constructions. Cf. sense 14a. Modifying a verb: definitely, decidedly…