παρακλέπτον
παρακλέπτω, to steal from the side, filch underhand
Morpho works with a static database. If you like, you can compare the output of Morpheus.
Parsed as:
present active participle neuter accusative singular (Luc)
present active participle neuter nominative singular (Luc)
present active participle neuter vocative singular (Luc) of
παρακλέπτω