Ticklish — causing a sensation that makes one want to laugh or squirm when touched.
足の裏をくすぐると子どもはくすぐったくて笑う。
If you tickle the soles of a child's feet, they laugh because it's ticklish.
彼に首筋を触られてとてもくすぐったかった。
He touched my neck and it felt very ticklish.
くすぐったがり屋なので、ブラシを見るだけでくすぐったい気持ちになる。
I'm so ticklish that even seeing a brush makes me feel ticklish.
Embarrassing; feeling bashful or shy, especially when being praised or singled out.
みんなに褒められて、少しくすぐったい気持ちになった。
I was praised by everyone and felt a bit embarrassed.
そんなに褒められるとくすぐったくて照れてしまう。
If you praise me that much, it makes me bashful.