Antonyms of adj unexplored

1 sense of unexplored

Sense 1
undiscovered, unexplored -- (not yet discovered; "undiscovered islands")

INDIRECT (VIA unknown) -> known -- (apprehended with certainty; "a known quantity"; "the limits of the known world"; "a musician known throughout the world"; "a known criminal")

Similarity of adj unexplored

1 sense of unexplored

Sense 1
undiscovered, unexplored -- (not yet discovered; "undiscovered islands")
       => unknown (vs. known) -- (not known; "an unknown amount"; "an unknown island"; "an unknown writer"; "an unknown source")