hum and haw (verb) hem and haw: hesitate
Sinonime: awkward, beefy,
big,
colossal,
cumbersome, cumbrous,
enormous,
gross, heavy, hefty,
high, hulking,
immense,
large,
long, mammoth,
massive,
ponderous,
substantial, unhandy, unmanageable, unwieldy,
voluminous, weighty
Antonime: insubstantial,
miniature,
small,
thin,
tiny