stand-in, substitute, relief, reliever, backup, backup man, fill-in (verb)

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"

fill in (verb)

supply with information on a specific topic

"He filled me in on the latest developments"

shade, fill in (verb)

represent the effect of shade or shadow on

substitute, sub, stand in, fill in (verb)

be a substitute

"The young teacher had to substitute for the sick colleague"; "The skim milk substitutes for cream--we are on a strict diet"

complete, fill out, fill in, make out (verb)

write all the required information onto a form

"fill out this questionnaire, please!"; "make out a form"

fill-in (Noun)

A temporary replacement for another

Fill-In

Fill-Ins, also known as Fill-It-Ins or Word Fills, are a variation of the common crossword puzzle in which words, rather than clues, are given. Fill-Ins are common in puzzle magazines along with word searches, cryptograms, and other logic puzzles. Some consider Fill-Ins to be an easier version of the crossword. Since the Fill-In requires no outside knowledge of specific subjects, one can solve the puzzle in another language. Solving a Fill-In usually requires trial-and-error. Many times, a first word is already given to help the solver start, but some difficult puzzles require the solver to begin from scratch without any help. Word entries are listed alphabetically by amount of letters.