This article demonstrates the ‘patterning’ of the ways discourse markers such as okay, right and yeah are used in academic lectures by native speaker lecturers. It presents an analysis of a) what the lecturers thought they would say and b) what they actually say in comparison to what the lecturers actually do say. In other words, it focuses on the differences between expectations of what would be said and speech, that is, what is actually said.The data comprise verbatim lecture transcriptions (...) of four native speaker lecturers of different disciplines, analysed using a discourse analytical approach. The findings and discussions exhibit the reasons for the differences between the ‘anticipated’ and ‘real’ meanings of the use of these discourse markers.They also reflect upon the significance of non-verbal features in determining the actual functions of these markers. In short, this article highlights the reality use of okay, right and yeah as interactive conversational markers in academic lectures. (shrink)