The Oxford Thesaurus An A-Z Dictionary of Synonyms INTRO ...

plunder v. 1 pillage, loot, rob, ravage, ransack, rifle, despoil,
spoil, vandalize, sack, strip, maraud, devastate, desolate, lay
waste: The attacking army plundered the villages. 2 prey on or
upon, pirate, capture, seize: The buccaneers plunder the
Spanish treasure ships on the high seas.
--n. 3 pillage, looting, robbery, depredation, rapine,
despoliation, spoliation, vandalization, sack, vandalism,
vandalizing, sacking: It is said that the plunder of Rome took
no more than a fortnight. 4 booty, loot, spoils, prizes, Slang
boodle: The police displayed an Aladdin's cave of plunder
recovered from the thieves.
plunge v. 1 descend, drop, plummet, dive, pitch, nosedive, fall
(headlong): They lost their footing, and both Holmes and
Moriarty plunged into the abyss. 2 submerge, sink, immerse;
engulf, overwhelm: I plunged my hand in the icy water to
retrieve the keys. She plunged herself into her work to try to
forget him.
--n. 3 dive, nosedive, fall, pitch, plummet, drop, descent;
submersion, immersion: After the scandal his career took a
plunge from which it never recovered. Every winter they take a
plunge into the icy waters of the Serpentine. 4 gamble, wager,
bet, risk: Are you taking the plunge with an investment in
South America?
plus prep. 1 and, added to, increased by, with the addition of, with
an increment of, (coupled) with, together with: Two plus three
equals five. Your initial deposit plus accumulated interest will
make a substantial sum.
--adj. 2 added, additional, supplementary, extra: One must
take into account the plus value of the good publicity.
--n. 3 addition, bonus, extra, gain, benefit, asset, advantage,
profit, return: Improvements constitute a big plus in
evaluating the building.
plush adj. luxurious, posh, costly, (de) luxe, palatial, lavish,
rich, opulent, sumptuous, regal, elegant, Colloq ritzy, classy,
Old-fashioned swank(y): I had no idea that you lived in such
plush surroundings.