안절부절못해요 · 안절부절못했어요 · 안절부절못할 거예요 · 안절부절못하는 (+noun)
to be on pins and needles, unable to keep still from anxiety
Example
합격자 발표를 기다리면서 하루 종일 안절부절못했어요.
I was on pins and needles all day waiting for the list of who passed.
Word parts
안절부절 'fidgeting' + 못하다 'cannot': literally can't settle down.
Good to know
Standard form is 안절부절못하다, not 안절부절하다; pronounced [안절부절모타다].