prolongs

词形变化：

名词: prolonger | 动词过去式: prolonged | 动词过去分词: prolonged | 动词现在分词: prolonging | 动词第三人称单数: prolongs |

同义词：

extend | lengthen | stretch | elongate | delay | protract | draw out | spin out | persist | amplify | aggrandize | drag out | out | drag | keep up | sustain | suspend | defer | postpone | put off |

反义词：

shorten |