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ascertain

as·cer·tain

ascertain

 
 
pronunciation:
ae sr teIn
features:
Word Explorer, Word Parts
part of speech: transitive verb
inflections: ascertained, ascertaining, ascertains
definition: to learn unquestionably; determine.
The medical examiner has not yet ascertained the cause of death.
synonyms:
determine
similar words:
confirm, discern, discover, distinguish, establish, fathom, find out, learn, pin down, substantiate, unearth, verify
derivations: ascertainable (adj.), ascertainably (adv.), ascertainment (n.)
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Word Parts
The word ascertain contains the following part:
as- Latin prefix that means to, toward
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The prefix as- occurs in Latin loanwords. It is an assimilated form of ad- used before roots beginning with an "s" sound, such as "sent" and "cert." See ad-.
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