Promise
Word of honour
Synonyms Word of honour, assurance, vow, oath, undertaking, commitment, covenant, word, pledge, guarantee, bond, agreement, contract, and compact.
Potential
Synonyms Potential, aptitude, capacity, talent, ability, capability, potentiality, and flair.
Give one's word
Synonyms Give one's word, pledge, undertake, assure, engage, give an assurance, bind oneself, covenant, swear, vow, guarantee, contract, give an undertaking, commit oneself, swear/take an oath, and plight.
Indicate
Synonyms Indicate, lead one to expect, denote, be a sign of, show signs of, suggest, hold out hopes of, presage, augur, bode, portend, foretoken, harbinger, give an/every indication of, point to, signify, be evidence of, hint at, give hope of, bespeak, be a presage of, herald, foreshadow, betoken, and forebode.
Example Sentences
I promise to always listen.
She made a heartfelt promise.
They promise to keep trying.
His promise brought her comfort.