ISEE/SSAT Vocabulary Builder›Words›A›ascertain
ISEE/SSAThard
ascertain
to discover something with certainty
Synonyms
Antonyms
- guess
- doubt
- overlook
ascertain in a sentence
The inspector examined the wiring to ascertain the cause of the fire.
From the damaged records, historians could not ascertain who owned the land.
Where it comes from
From Old French acertener, meaning 'to make certain.'
Memory hook
ASCERTAIN contains CERTAIN: ascertain something to become certain of it.
Read it in context
- The Northern Channel History