Compounds of たど

• どたどた
  (n) noise, esp. of heavy feet
• たどり着く
  (v5k,vi) to struggle on to
  to arrive somewhere after a struggle
  to grope along to
  to barely manage to reach
  to finally arrive at
  to finally hit on (e.g. an idea)
  (P)
• 記憶をたどる
  (exp) reaching back into one's memory
  to search one's mind
  to recall