ろくでなし
Romanisation rokudenashi
What it means
Insult for a worthless or irresponsible person.
Literally “good-for-nothing”. Short editorial gloss; not an etymological claim.
Pronunciation Heard as “ro koo deh na shee”
English spellings approximate sounds and omit some contrasts. Use as retrieval hints, not authoritative pronunciation.
Used as
How it's used
Moral condemnation.
How strong is it? 3/5 · Vulgar
Moral condemnation. Ratings are contextual editorial estimates, not calibrated probabilities.