Uncharted rhymes with:
carted, darted, fainthearted, imparted, restarted, aborted, assorted, carted, courted, darted, escorted, exhorted, extorted, fainthearted, halfhearted, imparted, imported, lighthearted, misreported, ported, purported, resorted, restarted, retorted, shorted, snorted, sorted, sported, underreported, unreported, unsupported, wholehearted
Uncharted sounds like:
unaccredited, unanswered, uncured, unguarded, uninjured, uninsured, unsecured, unsworth