English thievish

← German diebisch (cognate)

← English thief (suffix)

← English ish (suffix)

← Middle English thevysch (inherited)

← German Low German deevsk (cognate)

← Dutch diefs (cognate)

← Saterland Frisian däifsk (cognate)

→ English thievishness (suffix)

→ English thievishly (suffix)