“极度的”的英语？

这种恐惧能给患者造成极度的痛苦.This phobia can cause untold misery for the sufferer.商店倒闭使他陷入了极度的绝望之中.He sank into the depths of hopelessness after his business failed.他总是显露出一种极度的自卑感.He is always showing a sweet inferiority feeling....