Triennial
Synonyms for Triennial
- tercentennial
- tercentenary
- tertianafter second
- biennial
- annual
- tertiaryafter second
- third
- anniversary
- three years
- periodic
- periodical
- sextennial
- quadrennial
- septennial
- octennial
- tricennial
- quinquennial
- decennial
- jubilee
- after second
- day of remembrance
For more similar words, try Triennial on Thesaurus.plus dictionary