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atrophy

/ˈætrəfi/·verb, noun

to waste away through disuse or lack of nourishment; the wasting itself
Fig. 1 — Two tracks leave the junction side by side.
01Definition

To atrophy is to waste away for want of use: Greek a- 'without' plus trophē 'nourishment' — starved, not attacked. Muscles atrophy inside a cast; a language atrophies when nobody speaks it to you; committees, town centres and friendships atrophy when the traffic through them stops. The word is its own noun — muscle atrophy is the clinical term — and its special claim is the cause built into it: nothing needs to go wrong except nothing happening.

02In use
  • iMuscles atrophy surprisingly fast when a limb is kept in a cast.
  • iiWithout daily practice, her French began to atrophy.
  • iiiThe committee atrophied into a body that met twice a year and decided nothing.
03Collocations
  • muscles atrophy
  • atrophy from disuse
  • skills atrophy
  • muscle atrophy
  • slowly atrophying

Family atrophy (noun) · atrophied (adjective)

04Relations

=waste away, wither, deteriorate, weaken, shrivel

≠strengthen, develop, flourish

06TOEFL & IELTS

Biology first — unused muscle atrophies, and medicine writes muscle atrophy as a noun — but the exams reward the transfer: skills, languages, institutions and civic habits atrophy when unused, a precise upgrade on 'get worse' because the cause (disuse) is named inside the verb. Greek roots make it stick: a- 'without' + trophē 'nourishment'. Its opposite in the gym is hypertrophy, growth from overuse. And do not let the ending pull you to entropy — a physics word from a different family altogether.

07Asked
What is the opposite of atrophy?
Hypertrophy — growth from overuse, the mirror image of wasting from disuse. In the gym, muscle hypertrophies under load and atrophies in a cast; the two Greek prefixes tell the story, hyper- 'over' against a- 'without', both fixed to trophē, 'nourishment'. For the figurative senses, strengthen, develop and flourish are the everyday opposites when a skill or an institution comes back to life.
What is the difference between atrophy and entropy?
They rhyme and end alike, but their tails come from different Greek words. Atrophy's -trophy is trophē, 'nourishment' — wasting from lack of use, always of something living or organised. Entropy's -tropy is tropē, 'a turning' — the physicist's measure of disorder, at home in thermodynamics, not biology. A muscle atrophies; a closed system's entropy rises. Only one of them belongs in a sentence about the body.
Can skills atrophy?
Yes — and it is one of the word's busiest modern uses. A language you never speak, a proof technique you never practise, a sense of direction outsourced to a map app: all atrophy from disuse, exactly as the branch line in the scene above rusts and greens over. Writers now warn of skill atrophy when routine work is handed to automation — the muscle unused is the muscle lost.
Is atrophy a verb or a noun?
Both, and the noun came first: English used 'an atrophy' from around 1600 and only pressed it into service as a verb in the mid-1800s. Today the verb (muscles atrophy) and the noun (muscle atrophy) are equally standard, and atrophied does duty as the adjective — an atrophied limb, atrophied instincts. Whichever you reach for, the built-in cause stays the same: not enough use.
What are the types of muscle atrophy?
Medical writing generally distinguishes three, useful vocabulary for reading passages: physiologic atrophy, from simple disuse and often reversible with exercise; pathologic atrophy, from disease, ageing or starvation; and neurogenic atrophy, from damage to the nerve feeding the muscle, which tends to be more sudden. The common thread is the word's own logic — the muscle stops being asked to work.
How do you pronounce atrophy?
AT-ruh-fee, /ˈætrəfi/ — three syllables, stress on the first, the same short a as in 'cat'. Despite the spelling it has nothing to do with a trophy: that word opens with a long 'oh' and comes from a different root entirely. The adjective atrophied keeps the stress in the same place: AT-ruh-feed.