apprehensive

worried or frightened that something unpleasant may happen ประหวั่น, ตระหนก, หวั่นกลัว

In Bangkok South Criminal Court on Monday, the clearly apprehensive defendants reacted with smiles of relief as they learned they would soon be free.

Extra sweating can make you appear nervous and apprehensive all the time.

Never having been here before, they were very apprehensive about the Thai way.