Textual thesaurus for "throw in"

(verb) come in, inject, interject, interpose, put in

to insert between other elements

She interjected clever remarks

(verb) quit, throw in the towel, drop by the wayside, drop out, fall by the wayside, chuck up the sponge, give up

give up in the face of defeat of lacking hope; admit defeat

In the second round, the challenger gave up