Word: happening
Part of speech: Verb
Syllables: hap
pen
ing
Definition: Present participle of happen; happen, occur, or be the case in the course of events or by chance;  (Santayana)
Morphemes:
Affix: hap
Language: en
Meaning: a chance, occurrence, byfall
Affix: -en
Language: en
Meaning: inchoative
Affix: -ing
Language: en
PoS: Suffix
Meaning: Used to form present participles of verbs.