decennium
2 synonyms for decennium, grouped by meaning and by how common each one is.
Noun — A period of ten years; another term for a decade.
Synonyms
Everyday swaps
Common words most readers know — safe in any writing.
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
Etymology
Comes from Latin decennium, from decennis ("10-year") plus -ium (a suffix forming abstract nouns), which goes back to deciēs ("ten times") plus annus ("year") plus -is (a suffix forming compound adjectives). Equivalent to decennial plus -ium.
Full origin of decennium →