Protein phosphatase involved in the inactivation of MAP kinases. Has a specificity for the MAPK11/MAPK12/MAPK13/MAPK14 subfamily. It preferably dephosphorylates p38. {ECO:0000269|PubMed:10391943, ECO:0000269|PubMed:10597297, ECO:0000269|PubMed:22375048}. This is the function of Ensembl gene identifier ENSG00000143507 (DUSP10, dual specificity phosphatase 10).