1. Lacking a conscience
   "a conscienceless villain"; "brash, unprincipled, and conscienceless"
   - unconscionable

See also: unconscientious

• ungratefulness
• ungratified
• ungratifying
• ungreased
• ungregarious
• ungroomed
• ungrudged
• ungrudging
• ungrudgingly
• ungual
• unguaranteed
• unguarded
• unguent
• Unguiculata
• unguiculate
• unguiculate mammal
• unguiculated
• unguided
• unguis
• Ungulata
• ungulate
• ungulated
• ungummed
• ungusseted
• unhallow