19 entries under length topic. ×

16
laborious(adjective, time, labour, spending, slow)
14
taking considerable time(time, expression, labour, spending)
13
time-taking(time, adjective, labour, spending, characteristic)
9
demanding(time, adjective, labour, spending)
9
troublesome(time, adjective, labour, spending)
9
wasteful(time, adjective, labour, spending)
8
considerable(time, adjective, labour, spending)
8
labour-consuming(time, adjective, labour, spending)
8
labour-intensive(time, adjective, labour, spending)
8
labourious(time, adjective, labour, spending)
8
operose(time, adjective, labour, spending)
8
time-sapping(time, adjective, labour, spending)
8
toilful(time, adjective, labour, spending)
6
arduous(adjective, time, hard, tough, slow)
1
complex(adjective, time)
1
labor-using(adjective, time)
1
time-devouring(adjective, time)
1
time-robbing(adjective, time)
1
toilsome(adjective, time)
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APASmart Define. (2013). time-consuming thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/time-consuming/thesaurus/synonyms
ChicagoSmart Define. 2013. "time-consuming thesaurus" https://smartdefine.org/time-consuming/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2013, time-consuming thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/time-consuming/thesaurus/synonyms>.
MLASmart Define. "time-consuming thesaurus" 27 June 2013. Web. 21 September 2026. <https://smartdefine.org/time-consuming/thesaurus/synonyms>