Syncope s => vis
Syncopated perfect often drops the 'v' and contracts vowel
conflagrav.isse V 1 1 PERF ACTIVE INF 0 X
conflagro, conflagrare, conflagravi, conflagratus V (1st) INTRANS [XXXCO]
be on fire/burn; be burnt down/consumed/utterly destroyed; be/become inflamed;

Credits:
This, our local install of the popular standby Whitaker's Words, is possible thanks to the resurrection of the venerable project at William Whitaker's Words, where you will also find extensive documentation. The corresponding GitHub repository is where you can submit issues about missing forms and analyses.
This web interface by Walter M. Shandruk.