breaking trust (verb) betray: be disloyal
Sinonime: adieu,
climax, closer, coda, conclusion, crowning achievement, crowning glory,
culmination, dying words, end piece, envoi,
epilogue, famous last words,
farewell, farewell performance, final appearance, final appearance or performance, final gesture, finis,
goodbye, last act, last hurrah, last shot, last words, parting song, peroration, windup
Antonime: be faithful, be loyal,
defend,
protect,
support