1
general::
Phrase(s): watch one’s step
1. be careful of one’s walking or stepping. • It’s slippery here. Watch your step. 2. Fig. to act with care and caution so as not to make a mistake or offend someone. • John had better watch his step with the new boss. He won’t put up with his lateness. • Mary was told by the teacher to watch her step and stop missing classes.
McGrawhill's American Idioms And Phrasal Verbs