以
Pinyin: yǐ
with; by means of
Example sentence
以你的能力，一定行。
Yǐ nǐ de nénglì, yídìng xíng.
With your ability, you'll surely make it.
What 以 means
以 (yǐ) is a Chinese word meaning “with; by means of”. It belongs to the Grammar Words topic and appears at HSK 4, so it is one of the words worth learning early when you study Chinese.