Uptight
Definition 1 of 2
Pro Tip 1/3
Stress Indicator
Use 'uptight' to describe someone visibly stressed or anxious, not just feeling so internally. He seemed uptight with all the pacing and hand-wringing.
Pro Tip 2/3
Temporary State
'Uptight' often refers to a temporary state due to a specific situation, unlike a permanent trait. She's only uptight when she's presenting in front of the class.
Pro Tip 3/3
Emotional Charge
It can carry a negative connotation, implying a lack of calm or composure. Don't be so uptight; the interview will go fine.