noun
Someone or something that is markedly unusual or unpredictable.
The two-headed calf was a freak.
freak of nature, freak of the weather, freak of the imagination
A hippie.
When long-haired, outlandishly dressed, drug-using hippies pilgrimaged to Haight-Ashbury in the early 1960s, they were quickly dubbed freaks; the pejorative appellation was both obvious and intended. It was not long before freak had become practically synonymous with hippie. It seems, however, that with the acceptance of long hair, the appearance and popularity of some rather bizarre fashions, and the emphasis placed upon "doing one's own thing," freak is no longer burdened with all of its former derogatory associations. Instead […] the word is beginning to acquire a quality which is favorable, glamorous, and somehow even admirable.
A drug addict.
Smith and Sturges [June 1969] note in their study of the San Francisco drug scene that freak means "anyone addicted to drugs."
A person who is extremely abnormal in appearance, social behavior, sexual orientation, gender identity, or business practices; an oddball, a unique person, originally in a displeasing or alienating way.
Gentrification often starts with the artists, revolutionaries, freaks, transfolks, and queers (what I would call my people) moving into poor neighborhoods inhabited by people of color.
A person whose physique has grown far beyond the normal limits of muscular development; often a bodybuilder weighing more than 260 pounds (120 kg).
verb
To react extremely or irrationally, usually under distress or discomposure.
When the owner found a bunch of beatniks in there, he freaked, but that was later.
But after one night turned into five days, I was freaking out. I missed him.
To be placed or place someone under the influence of a psychedelic drug, (especially) to experience reality withdrawal, or hallucinations (nightmarish), to behave irrational or unconventional due to drug use.
To streak; to variegate
Freakt with many a mingled hue.
[…] in fine diaper of silver and mother-of-pearl freaking the intense azure; Now scurrying close overhead, wild ink-hued random racers that fling sheeted […]
adj
Strange, weird, unexpected.
a freak genius
freak accident