Important
Valuable
noun, な adjective
だいじ
大事 (だいじ) Important, Valuable
お大事に (おだいじに、not on WK) Take Care Of Yourself, Get Well Soon, God Bless You
大した (たいした) Great, Considerable, Important, Big Deal
大切 (たいせつ) Important, Precious, Valuable
重要 (じゅうよう) Essential, Important, Necessary
胎児 (たいじ) Embryo, Fetus, Foetus
A big 大 matter 事 is a Serious Matter 大事