per·turb
[per-turb]
verb (used with object)
1. to disturb or disquiet greatly in mind; agitate.
2. to throw into great disorder; derange.
3. Astronomy . to cause perturbation in the orbit of (a celestial body).
Synonyms
1. trouble. 2. confuse, addle, muddle.
Antonyms
1. pacify.