impalpable /im-palˈpə-bl/

1. Not perceivable or detectable by touch
2. Not capable of being comprehended or grasped
3. Extremely fine-grained

• kitten heel
• kitten-heeled
• kitten heels
• kittening
• kittenish
• kittenishly
• kittenishness
• kittenishnesses
• kitten moth
• kitten moths
• kittens
• kitteny
• kitties
• kitting
• kittiwake
• kittiwakes
• kittle
• kittle cattle
• kittled
• kittle-pins
• kittler
• kittles
• kittlest
• kittlier
• kittliest