What is another word for wild blue yonder?
Pronunciation: [wˈa͡ɪld blˈuː jˈɒndə] (IPA) 
Wild blue yonder is an idiomatic phrase that means a vast and limitless space or the unknown territory where anything can happen. Some synonyms for the word "wild blue yonder" are "great expanse," "unlimited horizon," "wide open sky," "endless heaven," "limitless infinity," "boundless universe," and "infinite cosmos." These synonyms depict the idea of the unknown, the vastness, and the boundless possibilities that people imagine when they hear the phrase "wild blue yonder." The term can evoke the curiosity, adventure, and yearning for exploration that many people have when they look up and see the vastness of the sky.
