verb

disillusion

to disillusion, to disappoint

The reality of the job will disillusion you.

The reality of the job will disillusion you.

He was disillusioned by his hero's behaviour.

He was disillusioned by his hero's behavior.

((sb.)) to make (sb.) realize that a belief is false. The reality of the job will disillusion you.

to be disillusioned ((by sth.)) to be disappointed by (sth.). He was disillusioned by his hero's behavior.

Synonyms: disappoint, disenchant; Antonyms: enchant, inspire

From the prefix 'dis-' (negation) + 'illusion'. It means to take away an illusion.

Think of 'dis-' as 'destroy'. To 'disillusion' is to destroy an illusion.

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