Standard Lemma guide

fill-in

noun · 9 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • /ˈfɪlˌɪn/

1

noun

Meaning 1

A temporary replacement for another, especially at a job.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A substitution.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

An intermediate result that must be stored temporarily during the course of a sparse matrix computation.

Definition source: English Wiktionary via Wiktextract

Topics: mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

A question or puzzle in which one is expected to fill in a missing part of something.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

A musical embellishment (usually percussion) that is added to connect musical phrases.

Definition source: English Wiktionary via Wiktextract

Topics: entertainment, lifestyle, music

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

Something added to fill a gap.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 7

Something added to increase the size of something; padding or filler.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

noun

Meaning 8

A product category that is used to complete a range or variety of a product line.

Definition source: English Wiktionary via Wiktextract

Topics: business, marketing

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

9

noun

Meaning 9

someone who takes the place of another (as when things get dangerous or difficult)

Definition source: Princeton WordNet 3.0

Examples

  • the star had a stand-in for dangerous scenes
  • we need extra employees for summer fill-ins

Meaning relationships

Synonyms: stand-in, substitute, relief, reliever, backup, backup man

Antonyms: none provided

Broader terms: peer, equal, match, compeer

Narrower terms: locum tenens, locum, double, stunt man, stunt woman, surrogate, alternate, replacement

History

Etymology

From the verb phrase fill in.