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Definition of annum
annum
/ˈæn.əm/
an · num
Adverb:annually
•Adjective:annual
annum Lexical Profile
CEFR
C1
Grade
10
Tier
2
Usage
Top 10k
Syllables
2
annum Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
A year, especially as a unit of time used in financial, legal, or statistical contexts within the phrase "per annum."
Example
"The savings bond yields a fixed interest rate of four percent per annum."
Synonyms
View all synonyms for annumWord Nuance & Usage
In modern English, "annum" is almost exclusively bound to the formal and financial Latin phrase "per annum" (meaning "for each year" or "annually") and rarely functions as a standalone countable noun.
• Rhymes for annum
• Nearby Words
Word Origin & Etymology
Borrowed directly from Latin annum, the accusative singular form of annus ("year"), due to its governance by the preposition per in the fixed phrase per annum.
Cite this Entry
Wordmom. (2026). Definition of Annum. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/annum