1. Incapable of being overcome or subdued
   - invincible, unbeatable

See also: unconquerable

• unpaved
• unpeaceable
• unpeaceful
• unpeeled
• unpeg
• unpeople
• unpeopled
• unperceivable
• unperceived
• unperceiving
• unperceptive
• unperceptiveness
• unperformed
• unpermed
• unpermissive
• unpermissiveness
• unperplexed
• unperson
• unpersuadable
• unpersuaded
• unpersuasive
• unpersuasiveness
• unperturbed
• unpick
• unpictured