occasional
adjective/ukɐziˈonal/high
o·ca·si·o·nal
Definition
Occurring from time to time, not regularly; related to a specific occasion.
He is an occasional customer of this restaurant.
The rain was only occasional during the trip.
Common collocations
occasional visitoroccasional occurrenceoccasional work
Etymology
Do latim 'occasionalis', de 'occasio' (ocasião, oportunidade).