adjective
insufficient
in-suh-FISH-unt/ˌɪnsəˈfɪʃnt/
Not enough to meet a need or requirement.
The cord's insufficient length prevents it from reaching the wall socket.
Etymology
The underlying verb meant “supply as a substitute,” and its participle meant “adequate.” Adding “not” turns that adequacy into a shortfall: something insufficient cannot meet the relevant need.
In context
they don't have enough light and they bend towards the light this growth is a hormonally driven response to insufficient light
More examples
- The bank declines payments when an account has insufficient funds.
- A thin blanket provides insufficient warmth on cold nights.
- Ten minutes is insufficient time to finish the test.
Forms
insufficiency noun — A lack of enough to meet a need.
insufficiently adverb — To a degree that does not meet requirements.
Similar words
- inadequate
- Often emphasizes poor quality or suitability, not just quantity.
- deficient
- Often points to a specific lack or missing essential element.