Word: patteringly
Part of speech: Adverb
Syllables: pa
tter
ing
ly
Definition: With a pattering sound.
Morphemes:
Affix: pat
Language: en
PoS: Adverb
Meaning: Opportunely, in a timely or suitable way.
Affix: -er
Language: en
Meaning: frequentative 
Affix: -ing
Language: en
PoS: Suffix
Meaning: Used to form present participles of verbs.
Affix: -ly
Language: en
PoS: Suffix
Meaning: Used to form adverbs from adjectives.