Antonyms of adj middle-of-the-road

2 senses of middle-of-the-road

Sense 1
centrist, middle-of-the-road -- (supporting or pursuing a course of action that is neither liberal nor conservative)

INDIRECT (VIA left, center) -> right -- (of or belonging to the political or intellectual right)
INDIRECT (VIA center, right) -> left -- (of or belonging to the political or intellectual left)

Sense 2
middle-of-the-road -- (not extreme, especially in political views)

INDIRECT (VIA moderate) -> immoderate -- (beyond reasonable limits; "immoderate laughter"; "immoderate spending")

Similarity of adj middle-of-the-road

2 senses of middle-of-the-road

Sense 1
centrist, middle-of-the-road -- (supporting or pursuing a course of action that is neither liberal nor conservative)
       => center (vs. right) (vs. left) -- (of or belonging to neither the right nor the left politically or intellectually)

Sense 2
middle-of-the-road -- (not extreme, especially in political views)
       => moderate (vs. immoderate) -- (being within reasonable or average limits; not excessive or extreme; "moderate prices"; "a moderate income"; "a moderate fine"; "moderate demands"; "a moderate estimate"; "a moderate eater"; "moderate success"; "a kitchen of moderate size"; "the X-ray showed moderate enlargement of the heart")