Angus
anus
apparatus
bogus
bonus
Brutus
cactus
campus
caucus
cherub
circus
citrus
crocus
Cyprus
Damascus
dandruff
discus
focus
fungus
genus
hiatus
locus
lotus
minus
mucus
Olympus
onus
prospectus
ruckus
rumpus
status
surplus
tinnitus
thymus
Venus
virus
walrus