swell up
To become swollen
ADJ
heavy | gentle, slight | 10-foot, 20-foot, etc.
Atlantic, ocean
The Atlantic swell made swimming dangerous that morning, so the beach was closed.
SWELL + VERB
break, come/roll in, lift sb/sth, surge up
The ocean swell came rolling in during the afternoon, making it perfect for surfing.
PREP
in a/the ~
The small boat bobbed up and down in the ocean swell during our fishing trip.
on/with the ~
The surfers waited patiently on the swell, watching for the perfect wave to ride.
ADJ
firm, gentle, soft, warm
PREP
~ of
The ocean's swell of waves made it difficult for the small boat to move forward.
ADV
badly
After the bee sting, her arm swelled badly and turned red.
slightly
up
His ankle swelled up badly after he twisted it during the football match.
PREP
with
His face swelled with pride when he received the award.