ulul.ate V 1 1 PRES ACTIVE IMP 2 P
ululo, ululare, ululavi, ululatus V (1st) [XXXDX] lesser
ululat.e VPAR 1 1 VOC S M PERF PASSIVE PPL
howl, yell, shriek; celebrate or proclaim with howling;
ululat.e ADJ 1 1 VOC S M POS
ululatus, ululata, ululatum ADJ [XXXDX] lesser
yell, shout;
e SUFFIX
-ly; -ily; Converting ADJ to ADV
ululat.e ADV POS
ululatus, ululata, ululatum ADJ [XXXDX] lesser
yell, shout;

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.