Pronunciation: /əˈsɝtənd/
verb to find out or discover with certainty
A1 The detective ascertained the suspect's alibi.
A2 She ascertained the correct answer by checking her notes.
B1 The scientist ascertained the results of the experiment through careful analysis.
B2 The auditor ascertained the accuracy of the financial records.
C1 The historian ascertained the authenticity of the ancient artifact.
C2 The expert ascertained the validity of the research findings.
formal The results of the experiment helped us ascertain the accuracy of our hypothesis.
informal I finally ascertained the truth after talking to multiple sources.
slang I had to do some digging to ascertain what really happened.
figurative Through careful observation, she ascertained the underlying emotions behind his words.
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