Suffix. (slang, derogatory) Used to form words conveying an attitude of contempt or doubt over the subject's intelligence. Meaning: retardation, extreme stupidity.

Does slowly have a suffix?

In the word 'slowly', 'ly' is a suffix. The suffix 'less' changes a noun into an adjective, meaning 'without'.

What is tardy short for?

Occurring, arriving, acting, or done after the scheduled, expected, or usual time; late. 2. Moving or progressing slowly; sluggish: walking at a tardy pace. [Alteration of Middle English tardive, slow, from Old French tardif, from Vulgar Latin *tardīvus, from Latin tardus.]