(Phrasal verb) If someone chickens out of something they were intending to do, they decide not to do it because they are afraid.

For example:

I knew Cara would chicken out once she saw how high the high dive actually was.

Molly chickened out when she realized that the hike was three hours long.

My husband wouldn’t let me chicken out of the hot air balloon ride because we had already paid so much money for it.

Sometimes people chicken out of swimming in the river when they find out that alligators have been seen here occasionally.

Kate was glad she didn’t chicken out, because skydiving was one of the coolest experiences of her life!

Tradução:

“Chicken out” em inglês significa amarelar ou desistir por medo. É uma expressão usada para descrever alguém que decide não fazer algo devido ao medo, mesmo que tivesse planejado ou pretendido fazer.