[n] someone who takes the place of another (as when things get dangerous or difficult); "the star had a stand-in for dangerous scenes"; "we need extra employees for summer fill-ins"
[v] supply with information on a specific topic; "He filled me in on the latest developments"
[v] write all the required information onto a form; "fill out this questionnaire, please!"; "make out a form"
[v] represent the effect of shade or shadow on
[v] be a substitute
backup, backup man, complete, fill out, make out, relief, reliever, shade, stand in, stand-in, sub, substitute, substitute