chrF3 is a character n-gram metric, which has shown very good correlations with human judgements on the WMT2015 shared metric task (Stanojević et al., 2015), especially when translating from English into morphologically rich(er) languages.
similarly, BabelNet (Navigli and Ponzetto, 2012) aligns the lexicographic knowledge from WordNet to the encyclopaedic knowledge of Wikipedia.