Search and compare thousands of words and phrases in American Sign Language (ASL). The largest collection online.
How to sign: increase twofold "The population doubled within 50 years";
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See also: parlay, double up
Similiar / Same: double
Categories: manifold, multiply
Within this category: geminate, redouble
How to sign: being two identical
Similiar / Same: matching, twin, twinned
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