Synonyms for Dinner jacket:

n.

bomber jacket, dj, anorak, bolero, duffel coat. •clothing (noun)
housecoat, petticoat, garment, slicker, windbreaker, shirt, duds, ensemble, outfit, cape, sweat shirt, blue jeans, chapeau, jacket, smoking jacket, blouse, bathrobe, nightgown, sarong, attire, stetson, pea coat, homburg, greatcoat, wrapper, vesture, tunic, shawl, suit, dressing gown, crinoline, fez, kilt, bowler, shorts, pinafore, tuxedo, clothing, t-shirt, sari, gown, pyjamas, robe, slacks, jersey, pajamas, doublet, clothes, vestment, coat, kimono, panties, pillbox, habit, garb, array, apparel, evening gown, trousers, headdress, trench coat, pull over, boot, burnoose, trimming, poncho, sweat suit, brassiere, raiment, wrap, hat, v neck, bonnet, fedora, pants, camisole, fur, afghan, turtle-neck, corset, dress, sports coat, blazer, shoes, chemise, cloak, parka, jumper, halter, overcoat, costume, mackintosh, footgear, stockings, ulster, raincoat, topcoat, frock, sweater, smock, beret, skirt, caftan, scarf.
•dinner jacket (noun)
black tie, tux, tuxedo.
•men's formal jacket worn for eveningwear (noun)
black tie, tux, tuxedo.

Other synonyms:

bolero, duffel coat, anorak, bomber jacket. dj. •black-tie
black tie.
•Other relevant words:
tux.