(literature) A story arc wherein an immoral character redeems themselves and makes right for their wrongdoings (or wherein readers perceive them as having done so).

(euphemistic) Alternative form of hell of a.

(chemistry) the univalent radical -N=C=O (tautomeric with cyanate), and any of its hydrocarbyl derivatives R-N=C=O

simple past tense and past participle of layaway