1. Having a concave shape like a boat

See also: concave

• illiteracy
• illiterate
• illiterate person
• illness
• illocution
• illogic
• illogical
• illogicality
• illogically
• illogicalness
• illude
• illume
• illuminable
• illuminance
• illuminant
• illuminate
• illuminated
• illuminati
• illuminating
• illumination
• illumination unit
• illuminative
• illuminator
• illumine
• illuminism