The Collaborative International Dictionary of English v.0.48:

Scrutinize \Scru"ti*nize\, v. i.
   To make scrutiny.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Scrutinize \Scru"ti*nize\, v. t. [imp. & p. p. Scrutinized; p.
   pr. & vb. n. Scrutinizing.] [From Scrutiny.]
   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.
   [1913 Webster]

         Whose votes they were obliged to scrutinize. --Ayliffe.
   [1913 Webster]

         Those pronounced him youngest who scrutinized his face
         the closest.                             --G. W. Cable.
   [1913 Webster]

WordNet (r) 3.0 (2006):

scrutinize
    v 1: to look at critically or searchingly, or in minute detail;
         "he scrutinized his likeness in the mirror" [syn: size
         up, take stock, scrutinize, scrutinise]
    2: examine carefully for accuracy with the intent of
       verification; "audit accounts and tax returns" [syn: audit,
       scrutinize, scrutinise, inspect]

Moby Thesaurus II by Grady Ward, 1.0:

70 Moby Thesaurus words for "scrutinize":
   attend to business, autopsy, be alert, be obsessed with, canvass,
   check, check out, check over, check up on, concentrate on,
   contemplate, dissect, examine, examine thoroughly, eye, fix on,
   focus on, give an examination, give heed, give the eye,
   give the once-over, go deep into, go over, go through, hard look,
   inspect, investigate, leer, leer at, look at, look closely at,
   look lively, look out, look over, look sharp, miss nothing,
   monitor, observe, ogle, ogle at, overhaul, overlook, pass over,
   pass under review, pay attention, pay heed, peer at, perlustrate,
   perscrutate, peruse, pore, pore over, postmortem, probe, review,
   run over, scan, set an examination, sift, size, size up, study,
   survey, take a long, take care, take heed, take stock of,
   take the measure, vet, watch out