OS MtSin5:23 :ܬܥܗܕ ܕܐܚܘܟ ܐܚܝܕ ܥܠܝܟ ܐܟܬܐ‏ : you remember that your brother holds a grudge against you
See the entire entry for *ˀakkā, ˀakkəṯā n.f. anger, grudge