Noun: step-in step in
- Short underpants for women or children
"She bought a pack of cotton step-ins for her daughter";
- pantie, panty, scanty
- Get involved, so as to alter or hinder an action, or through force or threat of force
"Why did the U.S. not step in earlier in WW II?";
- intervene, interfere, interpose
- Act or speak as a replacement (for someone or something)
"She stepped in to lead the project when the manager resigned";
- substitute, deputize, deputise [Brit], sub [informal]
Derived forms: stepping in, steps in, step-ins, stepped in
Type of: chuddies [UK, dialect], interact, pants [Brit], replace, supercede [non-standard], supersede, supervene upon, supplant, underdacks [Austral], underdaks [Austral], underpants, undershorts [N. Amer]