mid-15c., "fruitful, abundant," from seed (n.) + -y (2). From 1570s as "abounding in seeds." Meaning "shabby" is from 1739, probably in reference to the appearance of a flowering plant that has run to seed. Related: Seediness.
例文
1. Frank ran dodgy errands for a seedy local villain.
フランクは地元で悪名高い悪党のために足を走らせ、人をだますようなことをしている。
2.Frank drifted into running dodgy errands for a seedy local villain.
フランクは地元の下品な悪人のために悪事を働き始めた。
3.He found his brother in a seedy ,roach-infested apartment.