Ascertain

6 clues
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Find out
Make sure
Fully determine
Cartesian (anag)
Determine for sure
Similar answers:
Acertaincommon
Acertainjustice
Acertainromance
Allbutcertain
Apianocertainly
Appertain
Appertains
Asce
Ascend
Ascendant
Ascendants
Ascended
Ascendedsteadily
Ascender
Ascenders
Ascending
Ascendonwings
Ascends
Ascendthethrone
Ascendtopower