16 entries under understudy topic. ×

3
alternate(verb, cover, relieve, exchange, substitute)
3
spell(verb, cover, relieve, exchange, substitute)
2
act for(verb, expression, phrasal verb, cover, exchange)
1
answer for(verb, expression, phrasal verb, cover, exchange)
1
be in place of(verb, cover, relieve, exchange, substitute)
1
commute(verb, cover, relieve, exchange, substitute)
1
cover for(verb, expression, phrasal verb, cover, exchange)
1
deputize(verb, cover, exchange, substitute, switch)
1
do the work of(verb, expression, idiom, phrasal verb, cover)
1
go as(verb, expression, phrasal verb, cover, exchange)
1
proxy(verb, cover, relieve, exchange, substitute)
1
stand for(verb, expression, phrasal verb, cover, exchange)
1
swap(verb, cover, relieve, exchange, substitute)
1
swap places with(verb, expression, idiom, phrasal verb, cover)
1
switch(verb, cover, relieve, exchange, substitute)
1
take over(verb, expression, phrasal verb, cover, exchange)
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APASmart Define. (2015). fill in for thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/fill_in_for/thesaurus/synonyms
ChicagoSmart Define. 2015. "fill in for thesaurus" https://smartdefine.org/fill_in_for/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, fill in for thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/fill_in_for/thesaurus/synonyms>.
MLASmart Define. "fill in for thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/fill_in_for/thesaurus/synonyms>