Giving up her phone was the punitive action for not doing her homework.
An example of punitive is a measure taken to reprimand someone.
Origin of punitiveMedieval Latin punitivus from Classical Latin punitus, past participle of punire, to punish
Origin of punitiveMedieval Latin pūnītīvus from Latin poenīre, pūnīre to punish ; see punish .
(comparative more punitive, superlative most punitive)
Medieval Latin punitivus, from pÅ«niÅ (“I punish").