Collocation Dictionary
Common collocations with sincerity in American Collocation
complete or genuine
absolute
complete
deep
evident
genuine
great
obvious
passionate
perfect
total
true
utmost
utter
I was always struck by his absolute sincerity and commitment to his work.
not genuine
fake
false
mock
seeming
The British offer reeked of mock sincerity.
doubt someone’s sincerity
doubt
question
suspect
We do not question the sincerity of our political opponents.
show that you are sincere
demonstrate
prove
Both these parties have to prove their sincerity and commitment to the partnership.