(dated) A sudden change of mind / (dated) Someone or something that is markedly unusual or unpredictable. / A hippie. / A drug addict.

(intransitive) To react extremely or irrationally, usually under distress or discomposure. / (transitive) To make greatly distressed and/or a discomposed appearance.

Strange, weird, unexpected.

A man, particularly a bold, strong, vigorous man. / (UK dialectal, Scotland) A fellow; a petulant young man.

(minced oath, slang, chiefly US, euphemistic) Fucking. / (obsolete) Freakish.

(euphemistic, slang, US) Fucking.

present participle of freak

(dated) A streak or variegation in a pattern.

plural of freak.

Third-person singular simple present indicative form of freak