1. Causing hurt
   "her hurtful unconsidered words" 
2. Harmful to living things
   - deleterious, injurious

See also: harmful, unkind

• unfrosted
• unfrozen
• unfruitful
• unfueled
• unfuelled
• unfulfillable
• unfulfilled
• unfunctional
• unfunded
• unfunny
• unfurl
• unfurnished
• unfurrowed
• ungainliness
• ungainly
• ungallant
• ungarbed
• ungarmented
• ungathered
• ungeared
• ungenerous
• ungentle
• ungentlemanlike
• ungentlemanly
• ungetatable