I occasionably visit my grandparents on weekends.

There are many occasionalisms in the English language.

His laziness occasioneth him to miss important opportunities.

She occasionest to visit her grandmother every Sunday.

I only see occasionals at the annual company party.

I occasionly go to the gym to work out.

She lived an occasionless life, never celebrating or acknowledging any special events.

Her occasionalness in attending social events surprised her friends.

He studied occasionalistic philosophy in college.