verbun·der·bought , un·der·buy·ing, un·der·buys
- To buy less (of something) than is needed.
- To buy something at a lower price than (a competitor).
To buy less of something than is needed.
(third-person singular simple present underbuys, present participle underbuying, simple past and past participle underbought)
- To buy at less than the value of.
- To buy at less than the price of another.
- To buy too little.
From under- +â€Ž buy.