walked on eggshells

Verb

walk on eggshells (third-person singular simple present walks on eggshells, present participle walking on eggshells, simple past and past participle walked on eggshells)

1. (idiomatic) To be overly careful in dealing with a person or situation because they get angry or offended very easily; to try very hard not to upset someone or something.
2. (idiomatic) To be careful and sensitive, in handling very sensitive matters.