sharpen
UK[ˈʃɑːpən]US[ˈʃɑːrpən]
v
to make something sharp or sharper
v
to improve something so that it is more effective or clear
v
to become sharp or sharper
Morpheme Breakdown
sharp
en
sharp
adjective
en
verb suffix
Etymology
the word 'sharpen' is a transparent english formation built from native germanic elements. its core, 'sharp', descends from the proto-germanic 'skarpaz', which itself originates from the proto-indo-european root '(s)kerb-', meaning 'to cut'. the addition of the old english verbal suffix '-en' (from '-nian') follows a common pattern for creating causative verbs, literally meaning 'to make sharp'. this logical construction directly links the physical act of creating a cutting edge to the modern abstract senses of improving focus, clarity, or effectiveness, demonstrating a clear semantic extension from the tangible to the metaphorical.
Analysis
Structure: sharp (adjective) + en (verb suffix)
- sharp: from old english 'scearp' (having a fine edge or point; acute). functional role: the core adjective root providing the meaning of 'having a keen edge or point'.
- en: from old english '-nian', a verb-forming suffix. functional role: a derivational suffix that converts an adjective into a verb meaning 'to make or become (adjective)'.
Examples
he used a whetstone to sharpen the kitchen knife.
the course is designed to sharpen your professional skills.
the outline of the mountains sharpened as the fog cleared.