Part of speech: noun
Definition: A reflection after an act; a later or subsequent thought, action, or expedient.
Example sentence: I have assumed my clear commitment to a Trinitarian orthodoxy was sufficient evidence that I have not intentionally ignored the role of the Holy Spirit. It may be true, however, that my work has been so Christ-centred, I may have given the impression that the Holy Spirit is an afterthought.
Part of speech: verb
Definition: To think again about a problem.
Example sentence: The problems of aging present an opportunity to rethink our social and personal lives in order to ensure the dignity and welfare of each individual.