A is for (whoever gets Z starts the next theme)

[twyngwyn]

Grows on a tree

A is for Almond

[twyngwyn]

D is for Debut (French)

[countessalmirena]

E is for elixir (from Arabic, but that word was taken from Greek)

[twyngwyn]

F is for Fez (Turkish)

[mytreechange]

G is for Glitch (Yiddish/German)

[twyngwyn]

Hooliganism (Irish)

[countessalmirena]

I is for iguana (Arawakan language)

[twyngwyn]

J is for Jalapeño (Mexico)

[mytreechange]

K is for Karaoke (Japanese) 

[twyngwyn]

L is for Luau (Hawaiian)

[mytreechange]

M is for Macho (Spanish)