= misprision, n.2 Usually with of.

Under-estimation (of self or of something).

= misprision, n.2

Contempt, scorn; failure to appreciate or recognize the value of something. Usually with of.

The action of representing (something) as slight and trifling; underrating; an instance of this, a plea to this end; a modification in terms.

Too low an estimate of a person.

The act of estimating at too low a value.

The action of extenuate, v. (For quot. 1671 cf. sense extenuate, v. 6.)

Want of appreciation; failure to appreciate or estimate duly.

The action of minifying something; reduction.

The action or practice of offering a deceptively or unrealistically low price, estimate, bid, etc. Cf. low ball, n. 2, lowball, v. 2.