Step-in — synonyms, definition

1. step-in (Noun)

pantie panty scanty

step-in (Noun) — Short underpants for women or children (usually used in the plural).

pants underdacks underdaks underpants undershorts

2. step-in (Verb)

deputise deputize interfere interpose intervene sub substitute

step-in (Verb) — Get involved, so as to alter or hinder an action, or through force or threat of force. ex. "Why did the U.S. not step in earlier in WW II?"

step-in (Verb) — Act or speak as a replacement (for someone or something).

interact replace supercede supersede supervene upon supplant cover interlope meddle tamper