Reduplication is a linguistic phenomenon whereby a segment, or a part thereof, is repeated to convey grammatical functions and as a means of lexical derivation. In Semitic, reduplication is widely attested and productive both in the nominal and the verbal systems. Modern South Arabian Languages (MSAL) are no exception, in that various reduplicated patterns are attested, among which the most common are C1C2C1C2, i.e. Soqotri ḥálḥal “gris” (Lonnet 2008: 130), Jibbali/Shehret xɔlxɔ́l “Brown-spotted grouper” (Castagna 2024: 9) from Proto-MSAL *√xl(xl) “brown/grey”, and C1C2C3C3, i.e. Mehri həźīrūr “to go pale, green, yellow” (Johnstone 1987: 163), Jibbali/Shehret šəṣ́rɔ́r “yellow” (Johnstone 1981: 265) from Proto-MSAL *√šṣ́r “(to be) yellow, green”. Another type, namely C1C2C3C2C3, has received little attention to date, despite its attestation in Modern South Arabian where it is more frequently, but not exclusively, found in the eastern branch (Jibbali/Shehret and Soqotri). This study primarily aims to provide an account of the morpho-phonological and semantic characteristics of this pattern.