The different scientists’ views on the artistic technique of incompleteness have been considered and systemized in the article. The term «non-finito» has been defined as an artistic technique used by the author to achieve a special (i.e., particular type) work expressiveness, in which individual details remain deliberately unfinished, look like the initial stage of development. The given phenomenon can be traced in Lesya Ukrainka’s literary heritage. Special attention has been paid to the analysis of the writer's works, which has shown vaguely expressed ending. The research has determined the model (stereotype) of creative work, which is specific for Lesya Ukrainka’s writing style. Various works of Lesya Ukrainka, namely dramas have been examined in the article in order to substantiate the «incompleteness» concept as a peculiar type of author’s type of thinking. The current research has investigated the phenomenon of art intentions in Lesya Ukrainka’s dramatical works, which have been applied in a variety of finales. The authors have studied various artistic techniques of non-finito. It has been indicated in the article that the most revealing work of aesthetics and poetics of non-finito is drama "Autumn Tale" – the most mysterious and unusual Lesya Ukrainka’s work. The drama is the brightest and most multifaceted embodiment of non-finito in writer’s creative work. This drama has a reputation of «obscurity» and became an object of different scientific research. Also, it has been noted that one of non-finito techniques in Lesya Ukrainka's works is so-called «truncation» of ending. It is used to both express and clarify the basic author's idea concept. Special attention in the article has been paid to the phenomenon of artistic intention in Lesya Ukrainka's dramas, embodied in a number of extremities. It becomes a characteristic factor of the whole characters’ behavior
incompleteness; inconsistency; openness; non-finito; ending; finale; truncation; intention; intentionality; new drama