Wiktionary
aff.
abbr. 1 (context legal English) Abbreviation for affidavit. 2 (context legal archaic English) In case citations, abbreviation for affirmed. 3 affair. 4 (context grammar English) affix. 5 affiliation or affiliated (with).
Usage examples of "aff.".
Jeemie sud be on his k-nees til her this vera moment--no sitting there glowerin as gien his twa een war twa bullets --fired aff, but never won oot o' their barrels!