Antonyms of adj unimpeded

1 sense of unimpeded

Sense 1
unimpeded -- (not slowed or prevented; "a time of unimpeded growth"; "an unimpeded sweep of meadows and hills afforded a peaceful setting")

INDIRECT (VIA unobstructed) -> obstructed -- (shut off to passage or view or hindered from action; "a partially obstructed passageway"; "an obstructed view"; "justice obstructed is not justice")

Similarity of adj unimpeded

1 sense of unimpeded

Sense 1
unimpeded -- (not slowed or prevented; "a time of unimpeded growth"; "an unimpeded sweep of meadows and hills afforded a peaceful setting")
       => unobstructed (vs. obstructed) -- (free from impediment or obstruction or hindrance; "an unobstructed view")