sort of thing, so, if so, in that case, well

Radicals

• 全然【ぜんぜん】
  (not) at all, (not) in the slightest, wholly, entirely, completely, totally, extremely, very
• 突然【とつぜん】
  abrupt, sudden, unexpected
• 自然【しぜん】
  nature, natural, spontaneous, automatic, naturally, spontaneously, automatically
• 偶然【ぐうぜん】
  coincidence, chance, accident, fortuity, by chance, unexpectedly, accidentally, contingency
• 天然【てんねん】
  nature, spontaneity, natural airhead