frequenter的复数形式怎么拼写？

During that period, John became a frequenter of a local bar.在那段时期, 约翰成了当地一家酒吧的常客....

n.常常来访者，常客...

frequenter的音标：frequenter的英式发音音标为：[frɪk'wentə]frequenter的美式发音音标为：[frɪ'kwentə]...