In the derivational process the addition of an affix often coexists with cutting off the part of the word structure. In the analysed material this derivational technique was found in forty percent of the examples. It is more common when the derivative becomes longer because of addition of subsequent affixes. Sometimes back-formation results from the structure of a root word - 'j' is cut off in nouns of non-Polish origin and so this prevents forming of combinations unknown in Polish. The back-formation shortens also the structure of the derivative and, sometimes, it helps to preserve clear semantic structure of a derivative.
Financed by the National Centre for Research and Development under grant No. SP/I/1/77065/10 by the strategic scientific research and experimental development program:
SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.