uptight

adjective

Pronunciation: /ʌpˈtaɪt/

Excessively concerned with rules and order, always serious.
“Don't be so uptight! You won't go to jail for crossing the street against the light.”
Emotionally repressed; nervous and tense.
Sexually repressed.
“He came from a very uptight religious background, but you wouldn't know that now!”
Unfriendly or rude.
“Withnail: Just because the best tailoring you’ve ever seen is above your fucking appendix doesn’t mean anything. / Danny: Don’t get uptight with me, man.”