How do I Say and Write
"Nasty" in Japanese?

Pronunciation : Nas"ty
Part of Speech : a.
Etymology : [For older nasky; cf. dial. Sw. naskug, nasket.]
Definition : 1. Offensively filthy; very dirty, foul, or defiled; disgusting; nauseous.

2. Hence, loosely: Offensive; disagreeable; unpropitious; wet; drizzling; as, a nasty rain, day, sky.

3. Characterized by obcenity; indecent; indelicate; gross; filthy.

Syn. -- Nasty, Filthy, Foul, Dirty. Anything nasty is usually wet or damp as well as filthy or dirty, and disgusts by its stickness or odor; but filthy and foul imply that a thing is filled or covered with offensive matter, while dirty describes it as defiled or sullied with dirt of any kind; as, filthy clothing, foul vapors, etc.

[Compar. Nastier (; superl. Nastiest.]
Source : Webster's Unabridged Dictionary, 1913