biribiriinterjtrue, verily; for sure it is true, an interjection expressing agreement with s.b. who is speakingBiribiri ye leka na kuteera mpaka.It is true do not even argue.3.5.1.9Promise3.2.5.1.1Trust9.6.3.2Markers of emphasis 4.3.5.3Reliable9.4.6Yes9.4.4.1Certainly, definitely9.4.4.2Sure3.2.5.1Believe3.4.1.5Confident