79 entries under extension topic. ×

16
protraction(noun, act, increase, delay, development)
15
continuation(noun, increase, keep, delay, development)
11
continuance(noun, increase, keep, line, spread)
10
lengthening(noun, increase, delay, development, spread)
10
perpetuation(noun, increase, keep, line, spread)
8
elongation(noun, act, increase, delay, development)
8
persistence(noun, course, track, period)
7
maintenance(noun, support, keep, spread, care)
7
wing(noun, increase, delay, development, spread)
6
delay(noun, increase, development, spread, reach)
6
postponement(noun, increase, delay, development, spread)
6
production(noun, increase, delay, development, line)
6
run(noun, course, track, period)
6
stretch(noun, increase, delay, development, spread)
5
continuity(noun, increase, line, course, track)
5
duration(noun, increase, event, line, course)
5
projection(noun, shoot, section, annex)
4
annex(noun, increase, delay, development, spread)
4
expansion(noun, increase, group, delay, development)
4
spread(noun, verb, increase, delay, development)
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APASmart Define. (2015). prolongation thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/prolongation/thesaurus/synonyms
ChicagoSmart Define. 2015. "prolongation thesaurus" https://smartdefine.org/prolongation/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, prolongation thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/prolongation/thesaurus/synonyms>.
MLASmart Define. "prolongation thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/prolongation/thesaurus/synonyms>