To create an anagram; to rearrange the letters of a word or phrase to form new words or meanings (British spelling).
Formed from 'anagram' plus the suffix '-atise,' which is the British variant of '-atize.' Both suffixes come from Greek '-izein' and create verbs meaning 'to make' or 'to engage in' the noun. The '-ise' ending is standard in British English.
The British 'anagrammatise' and American 'anagrammatize' represent a fascinating split in English spelling that happened after American independence—the '-ize' ending is actually more Greek-authentic, but British English adopted '-ise' from French influence.
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