Definition of onerous
1
: involving, imposing, or constituting a burden : troublesome
an onerous task onerous regulations an onerous mortgage
2
: having legal obligations that outweigh the advantages
an onerous contract
Test Your Vocabulary
Name That Food
-
- Name these cookies!

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share onerous
Time Traveler for onerous
The first known use of onerous was in the 14th century
See more words from the same century