hyperirritability

Word family

• irritable
  adjectiveB2
• irritability
  nounC1
• irritate
  verbB2
• irritation
  nounB2
• irritant
  nounC1
• hypersensitivity
  nounC1
• hyperreactive
  adjectiveC2

Synonym discussion

Sense: noun/1

Hyperirritability is the most narrowly clinical of these terms — you will almost always find it in a medical chart or neurology report, describing nerve, muscle, or tissue responses to stimuli like light, sound, or touch. Hypersensitivity is broader: it covers allergic reactions (a peanut allergy is a hypersensitivity), emotional states, and sensory issues; it is the safer word for general use. Hyperexcitability focuses specifically on nerve cells firing too readily — a neurophysiologist might say hyperexcitability of motor neurons — and rarely describes whole-body symptoms. Oversensitivity is the everyday alternative: 'He's oversensitive to noise' sounds natural at the dinner table; 'He has hyperirritability to noise' sounds like a diagnosis. Irritability, without the hyper- prefix, means a tendency to become annoyed or a mild sensitivity — far less severe, and common in non-clinical speech.

Common collocations

Etymology

Hyperirritability combines the Greek prefix hyper- ('over, beyond, excessive') with irritability, which comes from the Latin verb irritare ('to excite, provoke, stimulate'). Irritability entered English in the 17th century meaning the quality of being easily provoked; the hyper- prefix was added in 19th-century medical writing to describe pathologically heightened nerve responses.