deafeningly
UK[ˈdefənɪŋli]US[ˈdefənɪŋli]
adv
to a very loud and overwhelming degree
Morpheme Breakdown
deafen
ing
ly
deafen
to make deaf
ing
adjective suffix
ly
adverb suffix
Etymology
the core of the word lies in the old english verb 'dēafian', meaning 'to become deaf', which itself derives from the adjective 'dēaf', meaning 'deaf'. this adjective has proto-germanic roots (daubaz) and is related to the concept of stupor or numbness. the addition of the '-en' suffix formed the verb 'deafen', meaning 'to make deaf'. the subsequent addition of the '-ing' suffix creates the participial adjective 'deafening', describing something that has the quality of causing deafness. finally, the adverbial suffix '-ly' is appended, converting the adjective into an adverb that describes an action performed to an extreme, overwhelming degree, much like a sound so loud it could cause deafness.
Analysis
Structure: deafen (to make deaf) + ing (adjective suffix) + ly (adverb suffix)
deafen (from middle english 'defenen', from old english 'dēafian', meaning 'to become deaf', of germanic origin); ing (old english '-ende', '-inge', present participle or adjective-forming suffix); ly (old english '-līċe', adverb-forming suffix, from adjective suffix '-līċ')
Examples
the silence after the explosion was deafeningly profound.
the criticism was deafeningly loud from the opposition benches.
the colors in the painting were deafeningly bright and almost painful to look at.