VERBS

be, look, prove, sound

ADV

absolutely, completely, entirely, quite, totally, utterly
The gossip about her later proved to be entirely false
partly
certainly, definitely
blatantly, clearly, obviously, patently, undoubtedly
Their claim was patently false

PHRASES

true or false
Lagos is the capital of Nigeria. True or false?

VERBS

be, ring, sound
Ella's enthusiasm rang false

ADV

horribly, very
She managed a horribly false smile
slightly
Helen's voice sounded slightly false