Green’s Dictionary of Slang

frit n.

[SE colloq. frit, frightened; his supposed cowardice]

(US) an effeminate male homosexual.

[UK](con. WWII) G. Sire Deathmakers 46: Jesus Christ, frit [...] This is a war, frit, you know what I mean? You can’t brown-nose your way out of everything.
[US]Wentworth & Flexner DAS (Supplement).