Adjective
-
requiring precise accuracy
"an exacting job"
"became more exigent over his pronunciation"
-
severe and unremitting in making demands
"an exacting instructor"
"a stern disciplinarian"
"strict standards"
-
having complicated nutritional requirements
especially growing only in special artificial cultures
"fastidious microorganisms"
"certain highly specialized xerophytes are extremely exacting in their requirements"