promissory

adj.

应允的，承诺的，约定的；

promissory note[商]本票；[商]期票

promissory estoppel允诺后不得否认的原则；不得反悔原则

1. This promissory note is invalid.
   这张期票（本票）是无效的。
2. When one borrows from a bank, one signs a promissory note.
   当你从银行借款时，你应签署一张本票。

Promissory Notes: Women in the Transition to Socialism
Beyond Promissory Estoppel: Contract Law and the "Invisible Handshake"
Stress, NK cells, and cancer: Still a promissory note.
Promissory futures and possible pasts: The dynamics of contemporary expectations in regenerative medicine
Vasodilator therapy of heart failure. Has the promissory note been paid?
Questioning the "New Consensus"on Promissory Estoppel: An Empirical and Theoretical Study
When Should an Offer Stick? The Economics of Promissory Estoppel in Preliminary Negotiations
Crambe abyssinica: An almost unknown crop with a promissory future to produce biodiesel in Argentina
The Politics of Personalised Medicine: Pharmacogenetics, expectation and promissory science
Idiographic measurement strategies for personality and prediction: Some unredeemed promissory notes.