词根：pall = pale 苍白无力的;暗淡的;浅色的

 来自拉丁语的pall意为pale。

同源词：

1. appall [让某物变得苍白ap<ad(=to)+pall(=pale)]
  vt．使惊骇
  appalling adj.骇人听闻的
  appallingly adv.令人毛骨悚然地
  The way he beats his dog appalls me. 他打狗的样子令我毛骨悚然。

2. pallid
  adj. 无血色的，苍白的

3. pallor
  n.（脸的）苍白

词根词缀：phthisio-, phthis-, phthi-, -phthisis

【来源及含义】Greek: decay, waste away, waning; loss, diminution

【相关描述】In the past, tuberculosis was called consumption, because it seemed to consume people from within, with a bloody cough, fever, pallor, and long relentless wasting. Other names included phthisis, Greek for "consumption" and phthisis pulmonalis.

【相关词根词缀】 Word families with similar applications about: "decay, rotten; wasting away; putrid, pus" word units: puro- (pus); pus (viscous fluid via an infection); pustu- (blister, pimple); putre- (rotten, decayed); pyo- (pus; purulent); sapro- (rotten, putrid, putrefaction, decay); sepsi- (decay, rot, putrefactive); suppurant- (festering, forming or discharging pus); tabe- (wasting away, decaying).

【同源单词】antiphthisic, fibroid phthisis, gastrophthisis, hemophthisis, laryngophthisis, limophthisis