British past tense: ate or acted greedily; behaved in a gluttonous manner.
Past tense of 'gluttonise,' following the regular '-ed' ending. In British English, verbs ending in '-ise' form past tense with '-ised,' maintaining the British spelling convention throughout the conjugation.
Regular verbs are the evolutionary success story of English—irregular verbs like 'eat/ate' are ancient holdovers, but new verbs almost always follow the 'add -ed' pattern, which is why English is slowly regularizing itself over centuries.
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