Vocabulary What does めそめそ mean? めそめそ means sniffling, whimpering (crying weakly and gloomily). Quick factsReadingめそめそ めそめそめそめそTOPICSsniffling, whimpering (crying weakly and gloomily)Example sentences転(ころ)んだ弟(おとうと)は、膝(ひざ)を押(お)さえてめそめそ泣(な)いていた。My younger brother who fell was holding his knee and whimpering.