Festina Lente

[Feles in silva]

This is one of the sentences in Ch.1 of Wheelock.

It is from festino, festinare.

My question is, what tense/mood is "festina", as it does not fit in with present, future or imprefect indicative active.

Or is it an irregular conjugation?

[Deses]

This is one of the sentences in Ch.1 of Wheelock.

It is from festino, festinare.

My question is, what tense/mood is "festina", as it does not fit in with present, future or imprefect indicative active.

Or is it an irregular conjugation?

It's Present Imperative Sing.

[Turpissimus]

It's the imperative. It's used for giving orders. Wheelock is being cheeky by giving it to you so early. I don't think you're supposed to know it.

[Deses]

It's the imperative. It's used for giving orders. Wheelock is being cheeky by giving it to you so early. I don't think you're supposed to know it.

Keep in mind that any author of a language instruction book is required to throw in some words and grammar every now and then - prior to their proper introduction. It never fails.