If something is mighty it means that it has or shows superior power or strength. It can also means that it’s very big in size or amount or that it’s exceptional in some kind of way. As an adverb, informally, mighty is a synonym for…
To nap means ‘to sleep for a short period of time,’ especially during the daytime. Figuratively, it means ‘to be off your guard.’ As a noun, a nap is a short period of sleep. Unrelatedly, a nap is the raised fuzzy end of fibers on the surface of cloth and the verb to nap means ‘to raise the nap.’ Nap is also used as a shortened version of…