一定

Pattern visualization

Examples

1. 我一定去。▶ —
   I'll definitely go.
2. 一定要小心。▶ —
   You must be careful.

Collocations

Mnemonic

一定 yídìng "definitely, certainly" — 一 + 定 = "fixed at one". Stronger conviction than 应该 (probably). 不一定 = "not necessarily / undecided".

Quick check

1. Meaning of 不一定?

   • "not necessarily, undecided"
   • unconfirmed
   • refusal
   • impossible