Robert Kiełtyka is Professor at the University of Rzeszów, Poland, and head of the Department of Historical and Contemporary English and Contrastive Linguistics. His main areas of research includes historical linguistics (diachronic semantics), cognitive linguistics (especially metaphor-metonymy interface) and word-formation.

• spelling variation – writing system – element theory – lenition – headedness – reconstruction – vocalization – lateral – diphthongization – consonant-vowel interactions – quantitative analysis – k-means clustering – corpus historical linguistics – multiple negation – grammaticalization – scrambling – syntactic structure deviations – information structure ambiguities – constructionalization – semantic change – analogy – partitive genitive – analogical targeting – obsolescence – non-morphemic change – reinterpretation – libfixing – clipping – blending – polysemy – borrowing – French loanwords – word-formation – neoclassical combining forms