IPA: /ˈtʌtʃi/
KK: /ˈtʌtʃi/
Someone who is easily offended or upset by things that others might not find upsetting.
Be careful what you say around him; he's quite touchy about his work.
Touchy → It is formed from "touch" (from Old English "tucian", meaning to come into contact with) and the suffix "-y" (meaning characterized by or inclined to). The word "touchy" describes someone who is easily affected or sensitive to touch or criticism.
Think of someone who is easily affected by contact or criticism — that's why touchy means sensitive.