Question

(collo) if something appearshttps://www.macmillandictionary.com/dictionary/british/appear ..., it appearshttps://www.macmillandictionary.com/dictionary/british/appear suddenlyhttps://www.macmillandictionary.com/dictionary/british/suddenly in a mysterioushttps://www.macmillandictionary.com/dictionary/british/mysterious way(thin)

Accepted Answer

out of/from thin airI can’t justhttps://www.macmillandictionary.com/dictionary/british/just_1 makehttps://www.macmillandictionary.com/dictionary/british/make_1 moneyhttps://www.macmillandictionary.com/dictionary/british/money appearhttps://www.macmillandictionary.com/dictionary/british/appear out of thin airhttps://www.macmillandictionary.com/dictionary/british/air_1.

Front	(collo) if something appears https://www.macmillandictionary.com/dictionary/british/appear ..., it appears https://www.macmillandictionary.com/dictionary/british/appear suddenly https://www.macmillandictionary.com/dictionary/british/suddenly in a mysterious https://www.macmillandictionary.com/dictionary/british/mysterious way (thin)
Back	out of/from thin air I can’t just https://www.macmillandictionary.com/dictionary/british/just_1 make https://www.macmillandictionary.com/dictionary/british/make_1 money https://www.macmillandictionary.com/dictionary/british/money appear https://www.macmillandictionary.com/dictionary/british/appear out of thin air https://www.macmillandictionary.com/dictionary/british/air_1 .

Collo) Something It In A Way Thin Of/From