What's the difference between contemptuous and shrewish?

Contemptuous

Definition:

(a.) Manifesting or expressing contempt or disdain; scornful; haughty; insolent; disdainful.

Example Sentences:

(1) He was contemptuous of Nelson’s small target strategy even in the early years in opposition, insisting voters always needed to know what a party stood for, and that it should stand for big ideas.
(2) Sly, underhanded, contemptuous, mendacious, double-dealing, cheating democracy.
(3) He dictates the next rally and when Murray decides to go for another lob, Dimitrov is on to the ruse and swats a contemptuous smash away to seal the first set that flashed by in the blink of an eye!
(4) (Of course, she was also perfectly aware of the feminist content, what it said about the disgusted-attracted-contemptuous male gaze, but she preferred the art to ask the questions, discomfit, not preach.)
(5) Thatcher was contemptuous of "the centre ground" and withering about consensus politics, holding it to be responsible for Britain's postwar decline and believing it to be a recipe for getting nothing done.
(6) It held its first national congress in Algiers, and although it was contemptuous of existing political organisations, Poujade made his own political party, Union et Fraternité Française.
(7) His enemies argue that he divided Europe by launching an illegal war; he kept the UK out of the eurozone and the Schengen agreement ; he is contemptuous of democracy (surely a qualification?
(8) It is rife with secrecy, top-down managerial manipulation, impervious to any outside scrutiny, contemptuous of any questioning, and has embraced extensive surveillance and discriminatory policing of religious and racial minorities.
(9) Photograph: AAP In her famous 1913 pamphlet, Round about a pound a week , Maud Pember Reeves wrote contemptuously about “the gospel of porridge” – the idea, still common among the wealthy, that the destitute wouldn’t be so wretched if only they invested their money wisely.
(10) Norte Energia officials are privately contemptuous.
(11) The voices (which by this time had multiplied and become much more aggressive) were witheringly contemptuous about this: "You can't even SPELL schizophrenia," one of them said, "So what the hell are you going to do about having it?!"
(12) Facebook Twitter Pinterest The words returned to haunt Renzi for weeks afterwards, in the fitting form, for this most Twitter-friendly of premiers, of contemptuous hashtags and YouTube satire.
(13) Judge Alistair McCreath said: "When a defendant makes a considered decision to abscond as you did he or she has shown a contemptuous disregard for that important obligation and that in itself matters."
(14) "If it is false, it is libellous; if it is true, it is contemptuous," he added.
(15) He was contemptuous of the way a powerful lobby had manipulated Jewish American opinion, although this compared with the way "the Greek, Armenian, Ukrainian and Irish diasporas have all played an unhealthy role in perpetuating ethnic exclusivism and nationalist prejudice in the countries of their forebears".
(16) But a decade ago, executive leadership fell into the hands of people obsessed with "get big quick" and openly contemptuous of co-operative values.
(17) The campaign, according to Graham, ignored focus group research that showed people were contemptuous of the idea that electoral reform would prevent corruption.
(18) "He doesn't do anything that presidents do, he doesn't worry about any of the things the presidents do, but he has the White House, he has enormous power, and he'll go down in history as the president – and I suspect that he's pretty contemptuous of the rest of us."
(19) Delivering the prestigious Hugh Cudlipp lecture, Dacre harangued what he dubbed the "subsidariat" of newspapers - in which he included the Times and the Guardian - which do not turn a profit and are "consumed by the kind of political correctness that is patronisingly contemptuous of what it describes as ordinary people".
(20) Whatever I asked him about, he was fantastically hostile and contemptuous.