srLex is a large inflectional lexicon of Serbian language where each entry consists of a (wordform, lemma, MSD, MSD features, UPOS, morphological features, frequency, per-million frequency) 8-tuple. The (wordform, lemma, MSD) triple frequencies are calculated on the srWaC v1.2 corpus. The MSD tagset follows the MULTEXT-East V6 tagset for the Serbo-Croatian macro-language available at http://nl.ijs.si/ME/V6/msd/html/msd-hbs.html. The UPOS + morphological features follow the UD v2 specifications available at http://universaldependencies.org/guidelines.html.