Yes, SWINGED is a Scrabble word!

Letter values in Scrabble US: S 1, W 4, I 1, N 1, G 2, E 1, D 2.

Is it a valid word?

SWINGED is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

burn superficially or lightly
move in a curve or arc, usually with the intent of hitting
move or walk in a swinging or swaying manner
change direction with a swinging motion; turn
influence decisively
make a big sweeping gesture or movement
hang freely
hit or aim at with a sweeping arm movement
alternate dramatically between high and low values
live in a lively, modern, and relaxed style
have a certain musical rhythm
be a social swinger; socialize a lot
play with a subtle and intuitively felt sense of rhythm
engage freely in promiscuous sex, often with the husband or wife of one's friends

Also: swing over, swing out, get around.