Underestimate
Part of speech: verb
Definition: to make too low an estimate of value, quantity etc., regarding (someone)
Part of speech: noun
Definition: an estimate that is too low
Example sentence: Once you have mastered time, you will understand how true it is that most people overestimate what they can accomplish in a year - and underestimate what they can achieve in a decade!
Lowball
Part of speech: noun
Definition: The position of the ball on an American railroad ball signal that indicated Stop.A form of poker in which the lowest-ranking poker hand wins the pot. Usually the ace is the lowest-ranking card, straights and flushes do not count making the best possible hand being A, 2, 3, 4, 5 regardless of suits (in contrast to deuce-to-seven lowball.)A form of cribbage in which the first to score 121 (or 61) is the loser.An unmixed alcohol drink served on ice or water in a short glass.
Part of speech: verb
Definition: To give (a customer) a deceptively low price or cost estimate that one has no intention of honoring or to prepare a cost estimate deliberately and misleadingly low.