1.
Rigid, turgid, barely
flexible.
2. A
corpse (dead long enough to have
rigor mortis).
3.
Cheat ("I got stiffed")
4. Ordinary man. ("You lucky stiff.")
5. Stand-up (a stiff collar... etc).
6.
Loaded to the gills,
pissed 7. Very. ("bored stiff")
See also: stiffy,stiffie