WordNet: betrayer, double-crosser, double-dealer, traitor, two-timer

a person who says one thing and does another

• hypernym beguiler, cheat, cheater, deceiver, slicker, trickster

• hyponym Judas

betrayer

• (englanti) betray (derivationally related)
• (suomi) kavaltaja (synonyymi)

double-crosser

• (englanti) double cross (derivationally related)
• (suomi) petturi (synonyymi)

double-dealer

• (suomi) petkuttaja (synonyymi)

traitor

• (suomi) petturi (synonyymi)

two-timer

• (suomi) huijari (synonyymi)