The Collaborative International Dictionary of English v.0.48:

Unscholarly \Unscholarly\
   See scholarly.

WordNet (r) 3.0 (2006):

unscholarly
    adj 1: not scholarly [ant: scholarly]

Moby Thesaurus II by Grady Ward, 1.0:

48 Moby Thesaurus words for "unscholarly":
   Gothic, Philistine, barbarous, bookless, callow, deceived,
   functionally illiterate, grammarless, green, heathen, hoodwinked,
   ill-educated, illiterate, inexperienced, led astray, lowbrow,
   misinformed, misinstructed, mistaught, naive, nonintellectual,
   pagan, rude, unbooked, unbookish, unbooklearned, unbriefed,
   uncultivated, uncultured, unedified, uneducated, unenlightened,
   unerudite, unguided, uninformed, uninitiated, uninstructed,
   unintellectual, unlearned, unlettered, unliterary, unread,
   unrefined, unripe, unschooled, unstudious, untaught, untutored