Source : Webster's Revised Unabridged Dictionary (1913)

Tearless \Tear"less\, a.
   Shedding no tears; free from tears; unfeeling. --
   {Tear"less*ly}, adv. -- {Tear"less*ness}, n.

Source : WordNet®

tearless
     adj : free from tears [syn: {dry-eyed}] [ant: {tearful}]