exacting[adjective]Synonyms: demanding, difficult, hard, harsh, rigorous, severe, strict, stringent, taxing, tough 
Antonyms: unexacting
Contrasted words: laissez-faire, lenient
Related Words: rigid, 
rigorous, 
severe, 
stern, 
strict, 
stringent, 
finicky, 
fussy, 
particular, 
critical, 
hypercritical [TahlilGaran] English Synonym Dictionary ▲
 ex‧act‧ing /ɪɡˈzæktɪŋ/ 
 adjective demanding a lot of effort, careful work, or skill
 Synonym : demanding: 
 She was an exacting woman to work for.exacting standards/demands/requirements etc
 She was an exacting woman to work for.exacting standards/demands/requirements etc He could never live up to his father’s exacting standards.
 He could never live up to his father’s exacting standards.  [TahlilGaran] Dictionary of Contemporary English ▲