Synonyms|37Antonyms|4|Broader|0Narrower|0Related|52
16
biannual
11
biyearly
8
half-yearly
6
biennial
6
semiyearly
4
time period
4
every six months
3
semi-annual
3
catamenial
3
centenary
2
bimonthly
2
biweekly
2
decennial
2
diurnal
2
fortnightly
1
period of time
1
period
1
annual
1
daily
1
hebdomadal
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APASmart Define. (2015). semiannual thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/semiannual/thesaurus/synonyms
ChicagoSmart Define. 2015. "semiannual thesaurus" https://smartdefine.org/semiannual/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, semiannual thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/semiannual/thesaurus/synonyms>.
MLASmart Define. "semiannual thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/semiannual/thesaurus/synonyms>