Compounds of とつ

• 朴とつ
  (adj-na) unsophisticated
  ruggedly honest
  artless
  unaffected
  simple
  naive
• べとつく
  (v5k,vi) to be sticky
• 何ひとつ
  (adv) (not) one (usu. in neg. phrases)
• 今ひとつ
  (adj-na,adv) (uk) (col) one more
  another
  the other
  not quite
  not very good
• ひとつとっても
  (exp) one example of (when there are more examples)