neuter singular accusative (or nominative) of kātabba, past participle (gerundive) of karoti 'do, make'
Analysis. kāta- (past participle stem of √kṛ 'do') + -bba (suffix marking necessity or obligation, related to -tavya in Sanskrit). The form expresses what is fit, proper, or obligatory to be done.
Etymology. √kṛ (Sanskrit kṛ-, Latin crēō 'create', English craft). The gerundive suffix -bba shares origins with Sanskrit -tavya, expressing an action that should or must be performed.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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