Of persons: that is such to an absolute degree; out-and-out, complete, ‘perfect’.

Of persons: Fully equipped or endowed; perfect, accomplished, consummate; esp. in reference to a particular art or pursuit, as a complete actor, hor…

With agent-noun or noun descriptive of a person: That is thoroughly of the character described. †Also formerly as predicate: Thoroughly established…

Complete, thorough; spec. (of a person) that is fully the kind of person indicated by the noun; thoroughgoing, out-and-out. Obsolete.

in grain adjectival phr. = dyed scarlet or crimson, fast dyed; hence in figurative use, esp. with contemptuous epithets, as ass, fool, knave, rogue…

Of a person: fully accomplished, supremely skilled.

In various senses related to essence, n. 1–4. Thorough, entire.

Completely corresponding to a definition, pattern, or description. Chiefly colloquial. Unmitigated, utter; sheer; absolute; veritable. Chiefly in…

Of a person. Chiefly in predicative use. That carries out or promotes something thoroughly; taking pains to do something carefully and completely.

Thoroughly trained or accomplished, perfectly skilled or versed (in something). Also: contrived with or exhibiting skill or expertise. Obsolete.

Thoroughly educated or accomplished; complete, thorough, out-and-out. Obsolete except as merged in sense A. 3.

Of a person or personal attribute: exemplifying a specified characteristic fully; absolute, extreme, out-and-out. Of an action, process, etc…

Thorough, complete; esp. that is fully the kind of person or thing expressed by the noun; thoroughgoing, out-and-out.

To one's inmost soul, downright.

Of persons: Thorough, out-and-out.

Thorough, out-and-out, to the backbone.