What is the meaning of I'm still confused with the verb Linger

Definition of I'm still confused with the verb "Linger" like in the song "Linger" sung by the Cranberries. What does she mean when she says "Do I have to let it Linger?"
HiNative is a global Q&A platform where you can ask people from all over the world questions about language and culture. We support over 110 languages.

Let It Linger / Letting It Linger

Let It Linger / Letting It Linger

Annihilation: A Novel (The Southern Reach Series, 1): VanderMeer

The Cranberries – Linger Lyrics

When God Hasn't Given You the Desires of Your Heart

BOMB Magazine Summon the Moon

lookaside.fbsbx.com/lookaside/crawler/media/?media

The Cranberries – Linger Lyrics

German grammar: Some simple and fast rules to learn German grammar

It's time to stop UFO mania - The Washington Post

Linger Definition & Meaning

The Ongoing Mystery of Covid's Origin - The New York Times

The Cranberries – Linger Lyrics

Still Just a Geek: An Annotated Memoir by Wil Wheaton