1. Showing no tendency to expand
   "unexpansive bodies" 
2. Not given to high spirits or effusiveness
   "an unexpansive man"

See also: restrained

Antonym: expansive

• illuminism
• illusion
• illusional
• illusionary
• illusionist
• illusive
• illusory
• illustrate
• illustration
• illustrative
• illustratively
• illustrator
• illustrious
• illustriously
• illustriousness
• Illyria
• Illyrian
• Ilmen
• ilmenite
• ILO
• Ilosone
• ilx
• ilxx
• ilxxx
• Ilya Ehrenberg