Collocation Dictionary

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Common collocations with certain in American Collocation

certain adjective

US /ˈsɜrt(ə)n/

completely

absolutely
quite

I’m quite certain that’s what she said.

not completely

fairly
not entirely
pretty
reasonably

By matching this information with our records we were reasonably certain that Edward was born in 1844.

almost

almost
virtually

The process is almost certain to take a couple of years.

appear
be
become
feel
seem

Scientists became certain that the drug was responsible for these birth defects.