Synonyms for Reassured:
General:
* Soothed
* Calmed
* Comfort
* Ease
* Allayed
* Assuaged
* Consoled
* Encouraged
* Instilled confidence
* Made feel secure
* Set at ease
More formal:
* Reinforced
* Confirmed
* Bolstered
* Strengthened
Informal:
* Put my mind at rest
* Took the edge off
* Made me feel better
Antonyms for Reassured:
General:
* Worried
* Anxious
* Uncertain
* Disturbed
* Nervous
* Fearful
* Apprehensive
* Concerned
More formal:
* Alarmed
* Discouraged
* Disheartened
Informal:
* Scared
* Freaked out
* Panicked
Note: The most appropriate synonym or antonym will depend on the specific context in which the word "reassured" is used.