From aa- + passe. Compare German anpassen.
aapasse (third-person singular simple present aapasst, past participle aapasst, past subjunctive aapassti, auxiliary haa)
- (reflexive) to adapt, adjust
- (reflexive) to conform, to fit in
- 1978, Rolf Lyssy and Christa Maerker, Die Schweizermacher (transcript):
Frölich nützt da gar nüt. Aapasse mues er sich.- Being cheerful won't do any good here. He's got to fit in.