68 entries under course topic. ×

54
time(noun, action, break, time, go)
27
spell(noun, action, break, time, go)
24
era(noun, time, set, present, turn)
23
duration(noun, time, event, run, turn)
23
epoch(noun, time, present, turn, group)
21
stage(noun, time, present, turn, point)
20
season(noun, adjective, break, time, turn)
18
span(noun, time, increase, group, piece)
15
stretch(noun, time, increase, present, turn)
12
generation(noun, time, present, turn, group)
9
cycle(noun, time, set, track)
8
run(noun, set, point, track)
7
extent(noun, time, increase, present, turn)
7
flow(noun, track, route, path)
7
round(noun, action, go, set, point)
6
length(noun, time, point, level, quantity)
6
lifetime(noun, present, turn, point)
5
bout(noun, action, go, present, turn)
5
session(noun, time, class, subject)
4
days(noun, time, group, life)
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APASmart Define. (2015). period thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/period/thesaurus/synonyms
ChicagoSmart Define. 2015. "period thesaurus" https://smartdefine.org/period/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, period thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/period/thesaurus/synonyms>.
MLASmart Define. "period thesaurus" 9 November 2015. Web. 24 September 2026. <https://smartdefine.org/period/thesaurus/synonyms>