1. (a.) Having no race or kindred; childless.

2. (a.) Not kind; contrary to nature, or the law of kind or kindred; unnatural.

3. (a.) Wanting in kindness, sympathy, benevolence, gratitude, or the like; cruel; harsh; unjust; ungrateful.

callous cruel disagreeable flinty hard harsh heartless ill inconsiderate inflexible inhospitable inhuman insensitive mean rigid severe stern thoughtless tough unaffectionate unamiable unbending unbenign unbenignant uncaring uncharitable unchristian uncompassionate uncompassioned unconcerned uncordial unfeeling ungenial ungracious unkindly unloving unsympathetic unsympathizing unthoughtful unyielding