WAASAP is an international Workshop series celebrated biannually that focuses on the aspect and argument structure of adjectives, adverbs, participles and prepositions. In the time of its existence, it has developed into a referential forum of discussion of the theory of predicative non-verbal categories.

Past editions have taken place at the University of Greenwich (2012), The Artic University of Norway at Tromsø (2014), the University of Lille 3 (2016), the Pompeu Fabra University (2018), and the University of Greenwich (2022). The 2024 edition is hosted by the Rovira i Virgili University in Tarragona.