Meaning & use
allergy
A condition in which the body reacts abnormally to a normally harmless substance.
See it in a sentence
His allergy to peanuts means he has to check every food label carefully.
Spring pollen triggers her seasonal allergy every year around the middle of April.
A note on using this word
An allergy is followed by 'to', as in 'an allergy to dust' or 'an allergy to cats'.
Words with a similar meaning
sensitivity
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Make it your own
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