Reading:

• On'yomi: サイ
• Kun'yomi: わざわい

Meaning:

• disaster, calamity, woe, curse, evil

Components:

• Radicals:
• 火: (86) fire
• 巛: (47) river, stream

Miscellaneous information:

• Strokes: 7
• Taught in grade 5
• Frequency: 976

Popular compounds containing this kanji:

• 災害 さいがい
  calamity, disaster, misfortune
• 火災 かさい
  conflagration, fire
• 防災 ぼうさい
  disaster prevention
• 被災 ひさい
  being a victim of (some disaster), suffering from
• 労災 ろうさい
  workers' compensation insurance