exacting

US /ɪɡˈzæk.tɪŋ/
UK /ɪɡˈzæk.tɪŋ/
"exacting" picture
1.

making great demands on one's skill, attention, or other resources

:
•
The work was physically exacting.
•
She has an exacting eye for detail.
:
demandingarduousonerousrigoroustaxing
:
exact