Synonyms|132Antonyms|15|Broader|3Narrower|1Related|70
8
extension
5
continuation
5
prolongation
5
protraction
4
elongation
4
extensiveness
4
longness
3
extent
3
length(noun, time, extent, distance)
3
perpetuity(noun, durability)
2
annex
2
continuance
2
distance
2
endlessness(noun, wordiness)
2
expansion
2
lastingness(noun, durability)
2
longitude
2
measure
2
mileage
2
prolixity
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APASmart Define. (2015). lengthiness thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/lengthiness/thesaurus/synonyms
ChicagoSmart Define. 2015. "lengthiness thesaurus" https://smartdefine.org/lengthiness/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, lengthiness thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/lengthiness/thesaurus/synonyms>.
MLASmart Define. "lengthiness thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/lengthiness/thesaurus/synonyms>