1. (of unknown regions) not yet surveyed or investigated
   - chartless, uncharted

See also: unknown

• imprint
• imprinting
• imprison
• imprisoned
• imprisonment
• impro
• improbability
• improbable
• improbableness
• improbably
• improbity
• impromptu
• improper
• improper fraction
• improperly
• improperness
• impropriety
• improv
• improvability
• improvable
• improve
• improved
• improvement
• improver
• improvidence