Hope deferred maketh the heart sick.

When an expected good is repeatedly postponed, the strain of waiting can become emotionally painful. The proverb treats disappointment not as a trivial inconvenience but as something that can wear down a person's spirits and resilience.

It may also warn against sustaining expectation without any fulfillment or clear prospect of progress. Delay can turn hope into distress, especially when someone has invested deeply in an outcome they cannot bring about themselves.

Use it when a long-awaited promise, decision, recovery, opportunity, or reunion keeps being delayed and the waiting has become dispiriting. It suits reflective or sympathetic remarks about prolonged uncertainty; the unchanged wording, especially “maketh,” sounds formal or literary in contemporary English.