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fill in
noun
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How to pronounce fill in:

Definition of fill in:

fill in (noun):
someone or something that fills in

Synonyms for fill in:

alternate
assistant
backup
cover
relief
replacement
reserve
stand-in
sub
substitute
surrogate

Antonyms for fill in:

leave blank
Other 2-syllable words

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Syllable-initial consonants are known to be clearer and stronger than syllable-final consonants due to articulatory strengthening.

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