"Disleal" is a word in ENGLISH

búdhì - Betrayal, treachery, foul play, treason, perfidy, perfidiousness; to betray, be false to, be faithless, disloyal. Ginbudhián ni Hudás …

Not true to allegiance, duty, or vows; perfidious; trecherous; disloyal; not of true fidelity; inconstant, as a husband or a …

mabúdhì - Treacherous, perfidious, disloyal, traitorous. (búdhì).

maluíb - Traitorous, treacherous, betraying, untrustworthy, disloyal, perfidious; a traitor. (cf. luíb, mabúdhì, malubhaón).