1. Not sensitive or susceptible to impression
   "an unimpressionable mind"

Antonym: impressionable

• grey-pink
• grey-white
• greyback
• greybeard
• greyed
• greyhen
• greyhound
• greyhound racing
• greyish
• greyish-black
• greyish-blue
• greyish-brown
• greyish-green
• greyish-pink
• greyish-white
• greylag
• greylag goose
• greyly
• greyness
• greyscale
• Grias
• Grias cauliflora
• gribble
• grid
• grid metal