Collocations for false - adj.

be, look, prove, sound

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.

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

be, ring, sound
Ella''s enthusiasm rang false.

horribly, very
She managed a horribly false smile.

slightly
Helen''s voice sounded slightly false.