Antonyms of verb weigh_down

1 of 2 senses of weigh down

Sense 1
weigh down, weigh on -- (be oppressive or disheartening to)
       Antonym of lighten (Sense 1)
      => lighten, lighten up, buoy up -- (make more cheerful; "the conversation lightened me up a bit")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb weigh_down

2 senses of weigh down

Sense 1
weigh down, weigh on -- (be oppressive or disheartening to)
       => sadden -- (make unhappy; "The news of her death saddened me")

Sense 2
drag down, bear down, bear down on, press down on, weigh down -- (exert a force with a heavy weight; "The snow bore down on the roof")
       => press -- (exert pressure or force to or upon; "He pressed down on the boards"; "press your thumb on this spot")