IshIsa 20:8 :ܕܡܢ ܕܚ̈ܠܬܐ ܒܙܒܢ ܝܪ̈ܩܢ ܘܒܙܒܢ ܣܡ̈ܩܢ‏ : (their faces) out of fear at times grow pale and at times redden
See the entire entry for yrq#2 vb. to be pale; to be green