half-step
UK[ˈhɑːf stɛp]US[ˈhæf stɛp]
n
A musical interval of one semitone, the smallest interval commonly used in Western music.
n
A small or cautious step or advance in any process.
Morpheme Breakdown
half
step
half
partial
step
pace
Etymology
The compound "half-step" is a transparent formation from two native English words of Germanic origin. "Half," deriving from Proto-Germanic halbaz, originally conveyed the concept of a side or one of two parts. "Step," from Proto-Germanic stap-, referred to the act of treading or a foot's movement. In music, the term emerged logically to describe an interval perceived as half the distance of a whole step (or tone), a concept formalized in Western music theory. Its figurative use for a cautious or incremental advance extends the literal sense of taking only part of a full stride, perfectly illustrating the semantic continuity from physical movement to abstract progression.
Analysis
Structure: half (partial) + step (pace)
half: From Old English healf (side, part), of Germanic origin; related to Dutch half and German halb. Functions as an adjective/prefix meaning "partial" or "constituting a moiety."
step: From Old English stæpe, stepe (pace, step), of Germanic origin; related to Dutch stap and German Stapfe. Functions as a noun meaning "a movement made by lifting the foot and setting it down."
Examples
The melody ascends by a half-step at that crucial moment.
The government's new policy is only a half-step toward meaningful reform.
To play the chromatic scale on a piano, you move by a half-step between each key.