Ps-Clem Recogs 1.12:9 :ܐܝܟ ܕܡܢ ܬܢܘܝ ܓܘܚܟܐ ܫܓܝܫܐ ܐܪܦܝܘ‏ : as if by agrement they let loose with riotous laughter
See the entire entry for rpy vb. to be lax