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1. Having complicated nutritional requirements; especially growing only in special artificial cultures
   "certain highly specialized xerophytes are extremely exacting in their requirements"
   - fastidious
    
2. Severe and unremitting in making demands
   "an exacting instructor"
   - stern, strict
    
3. Requiring precise accuracy
   "an exacting job"
   - exigent

1. Claim as due or just
   - demand
    
2. Take as an undesirable consequence of some event or state of affairs
   - claim, take

See also: demanding, exaction

Type of: ask, call for, claim, demand, involve, necessitate, need, postulate, require, take

Encyclopedia: Exact