deafen
UK[ˈdefn]US[ˈdefn]
v
to make someone unable to hear, either temporarily or permanently
v
to make a sound so loud that it is difficult or impossible to hear anything else
Morpheme Breakdown
deaf
en
deaf
unable to hear
en
verb-forming suffix
Etymology
the word 'deafen' is a transparent english formation built upon the ancient adjective 'deaf'. the root 'deaf' traces back to proto-germanic 'daubaz', meaning 'deaf, stunned', and further to the proto-indo-european root 'dʰewbʰ-', which carried the sense of 'smoke, mist, haze' and metaphorically extended to 'obscure, make unclear', a semantic path that logically leads to sensory deprivation. the causative suffix '-en', common in germanic languages, was appended to this adjective in the late 16th century, following a productive pattern seen in words like 'widen' or 'sharpen'. thus, the literal construction 'to make deaf' perfectly captures the modern action of causing hearing loss or being overwhelmed by noise.
Analysis
Structure: deaf (unable to hear) + en (verb-forming suffix)
- deaf: from old english 'dēaf', meaning 'lacking the sense of hearing, unable to hear'. its functional role is the core semantic root.
- en: a verb-forming suffix of germanic origin, used to form verbs from adjectives or nouns, meaning 'to make or become'. its functional role is to convert the adjective into a causative verb.
Examples
the explosion was so powerful it could deafen anyone standing nearby.
please turn down the music; you'll deafen us all.
the constant roar of the machinery had begun to deafen the factory workers.