Usually uncountable; may occasionally occur as a countable noun for individual instances of overexcitement.
Translations
The children were unable to sleep because of the overexcitement before the trip.
Les enfants n'arrivaient pas à dormir à cause de la surexcitation avant le voyage.
Definitions
A state of being too excited; excessive excitement or agitation. The children were unable to sleep because of the overexcitement before the trip.