Alternative form of once bitten, twice shy

(idiomatic) mentally deranged; demented; insane.

Synonym of a few cards shy of a full deck

(US) A loan shark; a usurer. / (offensive, ethnic slur) A person of Jewish descent.

(intransitive, US) To lend money at exorbitant rates of interest.

Someone who acts in a disreputable, unethical, or unscrupulous way, especially in the practice of law and politics.

(intransitive) To act in a disreputable, unethical, or unscrupulous way, especially in the practice of law and politics. / (transitive) To exploit (someone or something) in this way.

(fiction) A moneylender (Jewish stereotype) in Shakespeare's Merchant of Venice.

Alternative letter-case form of shylock

The quality of being shy; a fear of social interactions.