- aff. a prefix occurring orig. in loanwords from Greek, with the meanings “not,”“without,”“lacking”anaerobic; anhydrous; anonymous[/ex]regularly attached to words or stems beginning with a vowel or h. Compare a-•Etymology: < Gk IIan-aff. var. of ad- beforen: announce[/ex]IIIan-aff. var. of ana- before a vowel:anion[/ex]
From formal English to slang. 2014.