(n.) The quality or state of being premature; early, or untimely, ripeness; as, the prematurity of genius.

forwardness haste hastiness impropriety impulse impulsiveness inappropriateness inauspiciousness inconvenience inexpedience infelicity inopportuneness inopportunity intempestivity interruption intrusion irrelevance lateness overhastiness precipitation precociousness precocity prematureness rush unfavorableness unfitness unfittingness unfortunateness unpropitiousness unripeness unseasonableness unsuitability untimeliness wrongness