
1) Luftwaffe initially
Found on
https://www.crosswordclues.com/clue/gaf

Gaf or Gāf may be the name of four different Perso-Arabic letters, all representing ɡ. They are all forms of the letter kāf, with additional diacritics, such as dots and lines. There are three forms, each used in different places: ...
Found on
http://en.wikipedia.org/wiki/Gaf

Global Assessment of Functioning (scale).
Found on
http://www.encyclo.co.uk/local/21001

good as fuck
Found on
http://www.noslang.com/dictionary/g/

gaffe, gaf 1. A clumsy social mistake or breach of etiquette; such as, an insensitive remark. 2. A clumsy social error; a faux pas. 3. A blatant mistake or misjudgment. 4. Etymology: the meaning of 'blunder' is from about 1909, from French gaffe, 'clumsy remark'; originally, 'boat hook' from Old French gaffe, which came from Old Provençal gaf.
Found on
http://www.wordinfo.info/words/index/info/view_unit/3704/2

Governors Advisory Forum - a consultative body of representative governors, which meets monthly with local authority officers.
Found on
https://www.encyclo.co.uk/local/20928
No exact match found.