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| Date: | 1400-1500 |
| Language: | Old French |
| Origin: | prolonguer, from Late Latin prolongare, from Latin longus 'long' |
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pro‧long
[transitive]
[transitive]1 to deliberately make something such as a feeling or activity last longer [= lengthen]: 
I was trying to think of some way to prolong the conversation.
I was trying to think of some way to prolong the conversation.2 to make an unpleasant or anxious time last longer, especially when people are waiting for news : There's no point in prolonging the agony any longer.
prolong the agony
informalThere's no point in prolonging the agony any longer.
