tick ‧ lish /ˈtɪklɪʃ/ BrE AmE adjective
1 . someone who is ticklish laughs a lot when you tickle them
2 . [usually before noun] informal a ticklish situation or problem is difficult and must be dealt with carefully, especially because you may upset people:
Handling awkward neighbours can be a ticklish business.
3 . ( also tick‧ly /ˈtɪkli/) [usually before noun] a ticklish cough is in your throat rather than in your chest