Necessary
Necessary adjective - Forcing one's compliance or participation by or as if by law.
Sufficient and necessary are semantically related. In some cases you can use "Sufficient" instead an adjective "Necessary".
Nearby Words: necessity, necessarily
Sufficient
Sufficient adjective - Of a quantity that can fulfill a need or requirement but without being abundant.
Necessary and sufficient are semantically related. Sometimes you can use "Necessary" instead an adjective "Sufficient".
Both words in one sentence
- A good rule of thumb is that in most Heroic Suicides, the character's death is both necessary and sufficient to accomplishing their immediate goal.
Source: Heroic Suicide - In other words, review the sufficient and necessary statements as an If-then statement, then the sufficient should naturally come first.
Source: Ad Hoc -
Instant-Win Condition: Discovering all four cures is the necessary and sufficient condition to win the game.
Source: Tabletop Game / Pandemic
Cite this Source
Sufficient and Necessary. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/necessary/sufficient
Necessary & Sufficient. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/necessary/sufficient>.
Sufficient or Necessary. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/necessary/sufficient.
Google Ngram Viewer shows how "necessary" and "sufficient" have occurred on timeline