Word: testingly
Part of speech: Adverb
Syllables: test
ing
ly
Definition: In a challenging manner; so as to test the stamina, patience, etc.
Morphemes:
Affix: testing
Language: en
PoS: Adjective
Meaning: difficult, tough
Affix: -ly
Language: en
PoS: Suffix
Meaning: Used to form adverbs from adjectives.