Verb (5-dan, る, intransitive)
1. to feel nervous; to feel afraid; to feel self-conscious; to lose one's nerve; to get cold feet; to get the jitters
失敗してもいいけど、ビビって何も出来ないのが一番だめ。It's okay to fail, but it's the worst if you get cold feet and can't do anything.
2. to be startled; to be surprised; to be shocked; to feel frightened; to be spooked
めっちゃビビりましたよ、今！That really startled me just now!
3. to be shy; to be bashful