Definition of searching adjective from the Oxford Advanced American Dictionary

 

searching

 adjective
adjective
NAmE//ˈsərtʃɪŋ//
 
[usually before noun]
 
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(of a look, a question, etc.) trying to find out the truth about something; thorough and serious a searching investigation/analysis/examination He gave her a long,searching look. The police asked him some searching questions.
searchingly
 
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adverb She looked at him searchingly.
See the Oxford Advanced Learner's Dictionary entry: searching