IPA: /ˈveɪɡli/
KK: /ˈveɪɡli/
In a way that is not clear or definite; lacking precision or detail.
She vaguely remembered the details of the conversation.
Vaguely → It is formed from "vague" (from Latin *vagus*, meaning wandering or uncertain) and the suffix "-ly" (meaning in a manner of). The word "vaguely" means in a manner that is uncertain or not clearly defined.
Think of something that is 'wandering' or 'uncertain' — that's what 'vaguely' means, describing something that is not clear.