‘Clitic’ (from Greek κλίνειν ‘incline, lean’) is the term in traditional grammar for a word that cannot bear primary word stress and thus ‘leans’ on an adjacent stress-bearing word (the ‘clitic host’). A clitic leaning on a following word is a ‘proclitic’; one leaning on a preceding word is an ‘enclitic’. Clitics exhibit characteristics of both words and affixes and yet do not fall fully into either category: they are “like single-word syntactic constituents in that they function as heads, argum…