Pup, sup (to eat supper), up, yup,

2 syllables:

blood cup, brown cup, closeup, death cup, dice cup, egg cup, elf cup, eye cup, grace cup, lay-up, queen's cup, sweet cup, wolf pup

3 syllables:

acorn cup, black felt cup, champagne cup, coffee cup, dixie cup, drain the cup, drinking cup, fairy cup, golden cup, loving cup, moustache cup, mustache cup, optic cup, painted cup, paper cup, scarlet cup, stirrup cup

4 syllables:

charred pancake cup, measuring cup

from: rhymezone.com