We also modified the Karlsruhe basis sets to delete diffuse functions in an analogous manner. As compared to the correlation-consistent basis sets, the Karlsruhe basis sets contain fewer diffuse functions; for example, def2-SVPD contains a diffuse s function and a set of diffuse d functions for second-row atoms, but no diffuse p function, and for hydrogen there is a set of diffuse p functions but no diffuse s function. As a first truncation, and in analogy to to jul-cc-pVXZ, we delete all of the diffuse functions on hydrogen, forming what is traditionally called a "heavy-augmented" ("ha") basis set. The basis set consisting of def2-SVP for hydrogen and def2-SVPD for other atoms will therefore be denoted def2-ha-SVP. As a second step, and in analogy to jun-cc-pVXZ, we delete the highest angular momentum set of diffuse functions on each non-hydrogen atom. For second-row atoms, this leaves only minimal augmentation ("ma") with a diffuse s function, so we refer to these basis sets as "def2-ma-", e.g., def2-ma-SVP. This paradigm is sim-ilar in spirit to partially-augmented Karlsruhe basis sets tested previously by Zheng et al., although the diffuse exponents differ from that work because Ref. 81 did not start from the standardized Karlsruhe diffuse exponents that were introduced in Ref. 77. The latter serve as the starting point for our def2-ha and def2-ma basis sets. Exponents and contraction coefficients for these new basis sets are provided in the Supporting Information.