Autistic people may camouflage their innate autistic social behaviours to adapt to, cope within and/or influence the predominately neurotypical social landscape. This study describes behaviours exhibited, altered or avoided by autistic adults whilst camouflaging (i.e. camouflaging behaviours). Using Interpersonal Process Recall methodology, 17 autistic adults (8 women, 6 men and 3 agender/gender neutral individuals) participated in a brief social task designed to replicate a common day-to-day social situation. Participants then watched a video of their interaction with a researcher, actively identifying and describing camouflaging behaviours. Using qualitative content analysis, descriptions of 38 camouflaging behaviours described by participants were clustered into four main categories and seven subcategories: (1) masking, (2) innocuous engagement (subcategories: passive encouragement, centring social partner, deferential engagement and reducing social risk), (3) modelling neurotypical communication and (4) active self-presentation (subcategories: reciprocal social behaviours, risky social behaviours, and comfortable and familiar social behaviours). The novel use of Interpersonal Process Recall methodology addressed limitations in existing camouflaging research and facilitated the identification of previously unreported camouflaging behaviours. These camouflaging behaviours are discussed with reference to literature concerning interpersonal research and theory within and outside the field of autism. Lay abstract Camouflaging can be thought of as the process through which autistic people modify their natural social behaviours to adapt to, cope within or influence the largely neurotypical (non-autistic) social world. Many autistic people experience negative reactions to their natural or intuitive social behaviours when interacting with non-autistic people. Over time, in response to these negative reactions, autistic people’s social behaviour often changes. We refer to autistic people’s changed behaviours as ‘camouflaging behaviours’. Research exploring camouflaging behaviours is still at an early stage. This study investigated camouflaging behaviours used by autistic adults in everyday social interactions using a research method that was new to the field of autism. Specifically, 17 autistic adults were filmed taking part in a common everyday social situation – a conversation with a stranger. With the help of the video of this conversation, they then showed and described their camouflaging behaviours to a researcher. These autistic people identified and described a total of 38 different camouflaging behaviours. The detailed and specific information provided by autistic adults about camouflaging behaviours generated important new insights into the ways in which autistic people adapt to, cope within and influence the neurotypical (non-autistic) social world.