chuff
UK[tʃʌf]US[tʃʌf]
v
to move or proceed with a regular, puffing sound
v
(of a steam engine) to move making a regular sharp puffing sound
n
a rude or surly person (british informal, dated)
Etymology
the word 'chuff' is believed to be an onomatopoeic formation from the late middle english period, directly imitating the sound of puffing or explosive breath. this sound-symbolic origin is evident in its primary verb sense describing the rhythmic puffing of a steam engine. the informal british noun sense for a rude or surly person, first recorded in the early 20th century, is a figurative extension, likely comparing a person's gruff manner or expression to a short, blunt puff of air. thus, the word's journey is from direct sound imitation to descriptive mechanical action and finally to metaphorical human characterization.
Analysis
the word is considered a simplex form, likely of onomatopoeic origin, imitating a sharp, explosive sound of breath or steam.
Examples
the old steam train began to chuff steadily up the incline.
we could hear the engine chuffing in the distance long before we saw it.
don't mind him, he's just an old chuff.