happening (part of speech: verb)
existing (part of speech: verb)
occurring (part of speech: verb)
- In the absence of such happy chances- and in one way or another they kept occurring- his girls might have seemed lonely, which was not the way he struck himself. - "The Reverberator", Henry James.
- Well, I declare, there is always something occurring with you to worry my mind. - "The Lights and Shadows of Real Life", T.S. Arthur Edition: 10 Language: English.
- A thought, occurring, doubtless through a special Providence, suddenly relieved my mind. - "The Portland Sketch Book", Various.