いきな

go on, go ahead and

→ 行く
いき to go + な imperative
auxiliary · informal Rare #35,713
go on, go ahead and A casual, familiar way to invite or tell someone to go somewhere or do something; often appears after another verb in the form ~ていきな.
JA: ここで休んでいきな。
EN: Go ahead and rest here.
Conjugation of 行く

さっさと出ていきな。

Get out of here, now.

見ていきなよ

Go take a look.

— マルコムX (1992)

さっさとでていきな

Get out of here, now.

— 千と千尋の神隠し (2001)

のんびりしていきな。

Take it easy and stay awhile.