pocket-size or pocket-sizedadj

• unmanned
• unmannerly
• unmask
• unmatched
• unmentionable
• unmentionables
• unmerciful
• unmindful
• unmissable
• unmistakable
• unmitigated
• unmoral
• unmoved
• unmurmuring
• unmuzzle
• unnatural
• unnecessary
• unnerve
• unnumbered
• UNO
• unobserved
• unobtainable
• unobtrusive
• unoccupied
• unofficial