avoirdupois (http://definr.com/avoirdupois)

n 1: a system of weights based on the 16-ounce pound (or 7,000
grains) [syn: avoirdupois weight]
2: excess bodily weight; “she found fatness disgusting in
herself as well as in others” [syn: fatness, fat]
[ant: leanness]

vitiate (http://definr.com/vitiate)

v 1: corrupt morally or by intemperance or sensuality; “debauch
the young people with wine and women” [syn: corrupt, pervert,
demoralize, demoralise, debauch, debase, profane,
deprave, misdirect]
2: make imperfect; “nothing marred her beauty” [syn: mar, impair,
spoil, deflower]
3: take away the legal force of or render ineffective;
“invalidateas a contract” [syn: invalidate, void]
[ant: validate]