1. [adj]  not held in check or subject to control; "unhampered dissemination of news"; "this would give black people the opportunity to live unhampered by racism"
2. [adj]  not slowed or blocked or interfered with; "an outlet for healthy and unhampered action"; "a priest unhampered by scruple"; "the new stock market was unhampered by tradition"

UNHAMPERED is a 10 letter word that starts with U.