The database includes semantically related word pairs for English is based on Scheible 2014 1755. The ratings on similarity are based on human judgement experiments and comprise (i) a representative selection of target lexical units balanced for semantic category, polysemy, and corpus frequency, (ii) a set of human-generated semantically related word pairs based on the target units, and (iii) a subset of the generated word pairs rated for their relation strength, including positive and negative relation evidence.