illegalalteration

noun
UK /ɪˈliːɡəl ˌɔːltəˈreɪʃən/
US /ɪˈliːɡəl ˌɔːltəˈreɪʃən/

A change made to something in a way that breaks the rules.

The bank found an illegal alteration on the check.

SYNONYMS

forbidden changeunlawful modificationillicit editunauthorized change

RELATED WORDS

tamperingforgeryfraudmodificationfalsification

OTHER MEANINGS

2. Changing a document without permission to trick people.

He was caught making an illegal alteration to his passport.

3. Changing a computer file or record in a way that is not allowed.

The company reported an illegal alteration of its database.

4. Changing a building in a way that breaks the law.

The city fined them for an illegal alteration to the house.