assurance,
undertaking, guarantee, agreement, contract, word, pledge, vow, oath
potential,
possibilities, capacity, aptitude, talent, ability
assure,
swear, undertake, vow, guarantee, give your word, pledge, confirm, engage,
ensure
suggest,
augur, bode, look like, show all the signs, indicate, imply, insinuate, hint at,
forebode, foreshadow