The problem of understanding fiction texts, phenomenon of which is in variety of senses expressed, is directly related to revealing the information presented implicitly, to description of its types, mechanisms of text implication, ways of its extraction and subsequent interpretation. The article deals with occasional collocations as carriers of implicit information, unexpressed meaning, as a way and a mean of expression the implicational semantics of a fiction text. Componential and contextual analysis of occasional words, used in the novel by A.I. Solzhenitsyn "Red wheel", provides an option for interpretation of implicit information, essential for proper understanding of the fiction text. In occasional collocations principle of economy is realized. Content plan in occasionalisms of this type is significantly broader than expression plan. In case of uncommon semantic conditions notional word structure gets enriched, implicitly built-in options for semantic and stylistic develop affecting expression of the context on the whole. Occasionalisms and occasional word collocations do not presume literal or the only possible explication. In this connection, semantic interpretation of occasional word collocations is implemented within any cognitive based (conceptual system, background knowledge, thesaurus of author's personality, etc.) context (limited, broad or extralinguistic) supported by cognitive environment.