Sensible to slight touches; easily tickled; as, the sole of the foot is very ticklish; the hardened palm of the hand is not ticklish.

Standing so as to be liable to totter and fall at the slightest touch; unfixed; easily affected; unstable.

Difficult; nice; critical; as, a ticklish business.

difficult to handle; requiring great tact; "delicate negotiations with the big powers"; "hesitates to be explicit on so ticklish a matter"