unretentive
/ˌʌnrɪˈtɛntɪv/
adjective
- Not able to remember or hold information well; having a poor memory.
- His unretentive mind made studying for exams a real challenge.
- She is unretentive when it comes to names, often forgetting them moments after an introduction.
- The teacher noticed that the student was unretentive with new vocabulary words and needed extra review.
- Not able to hold or keep something physically, such as liquid or heat.
- The sponge became unretentive after years of use and no longer absorbed spills.
- The unretentive soil drained water so quickly that the plants wilted.
- This old thermos is unretentive and can't keep coffee hot for more than an hour.
Antonyms