Antonyms of adj burdenless

1 sense of burdenless

Sense 1
burdenless, unburdened -- (not encumbered with a physical burden or load)

INDIRECT (VIA unencumbered) -> encumbered -- (loaded to excess or impeded by a heavy load; "a summer resort...encumbered with great clapboard-and-stucco hotels"- A.J.Liebling; "a hiker encumbered with a heavy backpack"; "an encumbered estate")

Similarity of adj burdenless

1 sense of burdenless

Sense 1
burdenless, unburdened -- (not encumbered with a physical burden or load)
       => unencumbered (vs. encumbered) -- (free of encumbrance; "inherited an unencumbered estate")