on the bubble
The phrase "on the bubble" typically refers to a situation or state where someone or something is in a precarious or uncertain position, uncertain if they will qualify or be included in a certain group, competition, or outcome. It suggests being on the edge or borderline between being included or excluded.
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You will never be “out of your element” thanks to multiple difficulty levels and phrase libraries provide idiom puzzles for all levels from students to English learners to fluent adult English speakers.
Just Saying is “the real McCoy” of phrase games!