designed is a form of:

Burdensome



noun
1.
អ្នករំខាន
Example: Burdensome duties, responsibilities, etc.
adjective
1.
(troublesome, tiring, wearying) ដែលជាបន្ទុកដ៏ធ្ងន់, ដែលមានតម្លៃ, ដែលនាំឲ្យតូចចិត្ដ, ដែលខាតបង់
ENGLISH MEANING
adjective
1.
Grievous to be borne; causing uneasiness or fatigue; oppressive.
1.
boring, dilatory, dreary, dull, humdrum, irksome, monotonous, slow, sluggish, tardy, tedious, tiresome, uninteresting, wearisome
1.
amusing, entertaining, exciting, interesting, quick