Standard Lemma guide

man-month

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

One person's working time for a month, or the equivalent, used as a measure of how much work or labor is required or consumed to perform some task.

Definition source: English Wiktionary via Wiktextract

Examples

  • Holonyms: man-year, person-year
  • Meronyms: man-hour, person-hour < man day, person-day
  • In project management, there is always another dimbulb who will ask whether the relationship of man-months to calendar months is such that the schedule can be cut in half by doubling the headcount. The standard joke for disabusing this nonsense involves an expedited pregnancy lasting four and a half months instead of nine.

Meaning relationships

Synonyms: person-month

Antonyms: none provided

History

Etymology

Compound of man + month, although, as with any such unit of measure (e.g., pack-years, newton metres), the mathematical relationship of multiplication is simultaneously involved: X men working during Y months = X × Y = Z man-months.

Across languages

Translations

5 source translations are retained for this English entry.

  • Chinese Mandarin: 人月 (rényuè) — amount of work
  • Finnish: henkilötyökuukausi — amount of work
  • French: mois-homme — amount of work
  • Greek: ανθρωπομήνας (anthropomínas) — amount of work
  • Japanese: 人月 (ningetsu) — amount of work