Unpleasant is a related term of gruelling.
As adjectives the difference between unpleasant and gruelling
is that unpleasant is not pleasant while gruelling is so difficult or taxing as to make one exhausted; backbreaking.
unpleasant
English
Derived terms
* unpleasantness
* late unpleasantness
gruelling
English
Alternative forms
* grueling
Adjective
(
en adjective)
So difficult or taxing as to make one exhausted; backbreaking.
Synonyms
* (so difficult or taxing as to make one exhausted) backbreaking, exhausting