词根：ir, irr = 怒

同源词：

1. irate  [ir 怒，-ate ...的]
  v.发怒的，愤怒的

2. ire
  n.怒火，愤怒

3. ireful  [ire 愤怒，-ful ...的]
  adj.发怒的，愤怒的

4. irritate  [irr 怒，-it- ，-ate 动词后缀，使...]
  v.使发怒，使恼火，激怒

5. irritated  [见上，-ed 被...的]
  adj.被激怒的

6. irritating  [见上，-ing 使...的]
  adj.使人愤怒的，气人的，恼人的

7. irritable  [见上，-able 易...的]
  adj.易怒的，急躁的

8. irritability  [见上，-ability 名词后缀]
  n.易怒，烦躁

9. irritation  [见上，-ation 名词后缀]
  n.生气，恼怒

10. irritative  [见上，-ative ...的]
  adj.令人生气的，使人恼怒的

11. irritant  [怒，激怒→刺激，-ant ...的]
  adj./n. 有刺激（性）的；[-ant 名词后缀，表示物] 刺激物

词根词缀：histio-

【来源及含义】Greek: web, cloth, tissue

【相关描述】Many etymologically related words with the same family meanings with slightly different spellings are available at this histo- unit of words.

【同源单词】histiocyte, histiocytoma, histioid, histio-irritative, histionic, histocytosis

词根词缀：irrita-

【来源及含义】Latin: to anger; to excite, to stimulate, to stir up, to provoke

【同源单词】abirritant, abirritate, abirritation, counteriritation, histio-irritative, hyperirritability