確かなものにする

たしかなものにするtashikanamononisuru

expression · suru verb

  1. to strengthen
  2. to beef up
  3. to put on a firm basis
  4. to ensure
  5. to secure

Kanji in this word

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences