unformed

a. 未成形的,无定型的,未充分发达的

unfathomable, unfavorable, unfeeling, unfeelingly, unfeigned, unfeignedly, unfettered, unfinished, unfit, unflagging, unflaggingly, unflappability, unflappable, unflinching, unflinchingly, unfocused, unfold, unforeseen, unforgettable, unforgivable, unforseen, unfortunate, unfortunately, unfounded, unfreeze, unfriendly, unfrock, unfulfilled, unfurl, ungainliness, ungainly, ungenerous, unget-at-able, unglazed, ungodly, ungovernable, ungracious, ungraciously, ungrammatical, ungrammatically,