1) Abandoned 2) Free 3) Free of restraints 4) Not hindered 5) Not obstructed or hindered 6) Not slowed or prevented 7) Unbridled 8) Unchecked 9) Unconstrained 10) Unhindered 11) Unobstructed 12) Unrestricted 13) Without obstacles Found on https://www.crosswordclues.com/clue/unimpeded
adjective not slowed or prevented; `a time of unimpeded growth`; `an unimpeded sweep of meadows and hills afforded a peaceful setting` Found on https://www.encyclo.co.uk/local/20974