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1. Indecipherable or nonsense speech. I'm not a programmer, so I have no idea what they're saying in there—it all sounds like double Dutch to me. When you teach preschoolers, you get used to hearing double Dutch all day.
2. A style of jumping rope in which two ropes are swung at the same time in opposite directions. I'm pretty good at jumping rope, but I always get tangled up when I try double Dutch.
1. language or speech that is difficult or impossible to understand. This book on English grammar is written in double Dutch. I can't understand a word. Try to find a lecturer who speaks slowly, not one who speaks double Dutch.
2. a game of jumping rope using two ropes swung simultaneously in opposite directions. The girls were playing double Dutch in the schoolyard.
1. Language that cannot be understood, gibberish, as in They might have been speaking double Dutch, for all I understood. This usage dates from the 1870s (an earlier version, however, had it as high Dutch) and is heard less often today than the synonym double talk.
2. A game of jump rope in which players jump over two ropes swung in a crisscross fashion.