thinking again about a choice previously made; "he had second thoughts about his purchase"
an addition that was not included in the original plan; "the garage was an afterthought"
an addition that was not included in the original plan; "the garage was an afterthought
If you do or say something as an afterthought, you do or say it after something else as an addition, perhaps without careful thought. Almost as an afterthought he added that he missed her. something that you mention or add later because you did not think of it or plan it before