Semi-deponent verbs

There is an even smaller class of semi-deponent verbs. These take active meanings. In the perfect system they taken passive endings, and in the present system they take active endings. e.g.

gaudeo gaudere gavisus sum I rejoice
audeo audere ausus sum I dare, am bold
soleo solere solitus sum I am accustomed
fido fidere fisus sum I trust (+ dat.)
confido confidere confisus sum I confide in (+ dat.)
diffido diffidere diffisus sum I distrust