Dictionary
on•er•ous
Pronunciation: (on'ur-us, ō'nur-), [key]—
adj.
1. burdensome, oppressive, or troublesome; causing hardship:
onerous duties.
2. having or involving obligations or responsibilities, esp. legal ones, that outweigh the advantages:
an onerous agreement. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.