English thrifty

← English thrift (suffix)

← English y (suffix)

← Middle English thrifty (inherited)

← Middle English threfty (mention)

← Middle English thryfty (mention)

← Middle English þrifti (mention)

← Proto-Indo-European *terp- (root)

→ English thriftily (suffix)

→ English thriftiness (suffix)

→ English unthrifty (prefix)

→ English overthrifty (prefix)