Definition of ascertain in English:


Syllabification: as·cer·tain
Pronunciation: /ˌasərˈtān


[with object]
  • Find (something) out for certain; make sure of: an attempt to ascertain the cause of the accident [with clause]: management should ascertain whether adequate funding can be provided
    More example sentences
    • A second objective was to attempt to ascertain the limits to survival in terms of loss of conductivity.
    • It would be appreciated if you would ascertain this information in a timely manner.
    • Much effort has been expended in attempting to ascertain a precise antecedent to the trust in other laws.
    find out, discover, get to know, work out, make out, fathom, learn, deduce, divine, discern, see, understand, comprehend; establish, determine, verify, confirm; figure out



More example sentences
  • The common law is not always clear, but in most fields it is reasonably ascertainable.
  • He added that he would have given the cause of death as not ascertainable.
  • Even then it would not derive from any objectively ascertainable standard or consensus within a recognised profession.


More example sentences
  • We do not know how these subjects were selected or anything about the ascertainment of diagnosis or any other aspect of the design of the study.
  • Regardless of the opinions, however, the application of ascertainment and discernment require readers to discuss the book critically.
  • It allows the activation and communication of feelings which the mere ascertainment and manipulation of those circumstances and conditions would not evoke.


late Middle English (in the sense 'assure, convince'): from Old French acertener, based on Latin certus 'settled, sure'.

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elaborate ornamentation of a vocal melody