insid.eretur V 3 1 IMPF PASSIVE SUB 3 S
insido, insidere, insedi, insessus V (3rd) [XXXBO]
sit/settle on; occupy/seize, hold (position); penetrate, sink in; merge into;
insid.eretur V 2 1 IMPF PASSIVE SUB 3 S
insideo, insidere, insidi, insessus V (2nd) [XXXBO]
sit (at/on); sit (on) a horse; be seated; (things) rest/lie upon; lie heavy;
be situated in/on; inhabit (area); lie in ambush (in); be troublesome (to);
be fixed/stamped in; adhere to; grip; take possession of; hold/occupy;
insid.eretur V 3 1 IMPF PASSIVE SUB 3 S
insido, insidere, insidi, insessus V (3rd) [XXXFO] veryrare
sit/settle on; occupy/seize, hold (position); penetrate, sink in; merge into;

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.