Below are the words that matched your query...
Underwater
- growing or remaining under water; "viewing subaqueous fauna from a glass-bottomed boat"; "submerged leaves"
- beneath the surface of the water; "submerged rocks"
Undermentioned
- about to be mentioned or specified; "the following items"
Unprecedented
- having no precedent; novel; "an unprecedented expansion in population and industry"
Unexampled
- having no previous example or precedent or parallel; "a time of unexampled prosperity"
Unappealable
- not subject to appeal; "the judge's ruling was handed down in a preliminary hearing rather than a trial and was therefore unappealable"
Unappetizing
- not appetizing in appearance, aroma, or taste
Unappetising
- not appetizing in appearance, aroma, or taste
Unbefitting
- not befitting; "behavior unbefitting a father"
Undue
- not yet payable; "an undue loan"
- not appropriate or proper (or even legal) in the circumstances; "undue influence"; "I didn't want to show undue excitement"; "accused of using undue force"
- beyond normal limits; "excessive charges"; "a book of inordinate length"; "his dress stops just short of undue elegance"; "unreasonable demands"
- lacking justification or authorization; "desire for undue private profit"; "unwarranted limitations of personal freedom"