different between touchy vs toucht

English

From a later variant of tachy, techy, teachie, tetchy, simulating touch +? -y. More at tetchy.

touchy (comparative touchier, superlative touchiest)

(of a situation) Extremely sensitive or volatile; easily disturbed to the point of becoming unstable; requiring caution or tactfulness.
It is an extremely touchy situation, with everybody's patience wearing thin.
(of a person) Easily offended; oversensitive; ticklish.
He can be very touchy when you talk about his cat, so be as tactful as possible.

touch +? -t

toucht

(obsolete) simple past tense and past participle of touch
- 1798, Walter Savage Landor, Gebir
  She toucht his eyelashes with libant lip.

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