A promise.

synoniemen: parole, word.

Roget 768: promise, undertaking, word, troth, plight, pledge, parole, word of honor, vow; oath etc. (affirmation) 535; profession, assurance, warranty, guarantee, insurance, obligation; contract etc. 769; stipulation.    engagement, preengagement; affiance; betroth, betrothal, betrothment.    ... meer laten zien

Nederlands: woord van eer, erewoord, parool, woord
Pools: parol, słowo, słowo honoru