to stand up straight; to stick up (e.g. of hair); to stand (e.g. of a tree)
to stand up abruptly; to jump to one's feet
to stand (doing nothing); to stand around
彼は入口で突っ立っていた。
He was standing stock-still at the entrance.
寒い中、外で突っ立って待たされた。
I was made to stand outside in the cold and wait.
驚いて突っ立ったまま動けず、声も出せなかった。
I was so surprised that I stood frozen in place, unable to move or speak.