1. Extremely annoying or displeasing
   "his cavalier curtness of manner was exasperating"; "I've had an exasperating day";
   - infuriating, maddening, vexing, stupid [informal]
    
2. Making worse
   "exasperating factors in any movement extend over time";
   - aggravating, exacerbating

1. Make very annoyed or frustrated
   "His tardiness exasperated his boss";
   - aggravate
    
2. Make furious
   "The boy knew how to exasperate his mother"; "His rude behaviour tends to exasperate the entire group";
   - infuriate, incense[2]
    
3. Make worse
   "The humid weather exasperated his breathing problems";
   - worsen, aggravate, exacerbate

See also: displeasing, intensifying

Type of: alter, anger, change, modify

Antonym: amend