onerous
on-er-ous
adjective
Involving a great deal of effort, difficulty, or responsibility; burdensome.
"The new regulations proved particularly onerous for small businesses."
Thesaurus
Synonyms: burdensome, taxing, heavy
on-er-ous
Involving a great deal of effort, difficulty, or responsibility; burdensome.
"The new regulations proved particularly onerous for small businesses."
Synonyms: burdensome, taxing, heavy