troppo 1
/trop"oh/ ; It. /trddawp"paw/ , adv. Music.
too much; excessively.
[ trop orig., herd, flock; see TROOP ]
troppo 2
/trop"oh/ , adj. Australian Slang.
mentally disturbed.
[ 1940-45; TROP(IC) + -O, orig. in reference to the supposed psychological effects of life in tropical climates, esp. military service ]