to look at critically or searchingly, or in minute detail
He scrutinized his likeness in the mirror.
source: WordNet 3.0
examine carefully for accuracy with the intent of verification
Audit accounts and tax returns.
source: WordNet 3.0
To examine closely; to inspect or observe with critical attention; to regard narrowly; as, to scrutinize the measures of administration; to scrutinize the conduct or motives of individuals.