underguess

As a noun terms

is .

As a verb underguess is

to make a guess that is too small; to underestimate.

As verbs the difference between underestimate and underguess

is that underestimate is to perceive (someone or something) as having a lower value, quantity, worth, etc, than what he/she/it actually has while underguess is to make a guess that is too small; to underestimate.

As a noun underestimate

is an estimate or perception that is too low.

As verbs the difference between guess and underguess

is that guess is to reach a partly (or totally) unqualified conclusion while underguess is to make a guess that is too small; to underestimate.

As a noun guess

is a prediction about the outcome of something, typically made without factual evidence or support.