以至于
yǐ​zhì​yú HSK7

to the extent

以至于 (以至於) yǐ​zhì​yú
to the extent conjunction
expressing a result or degree reached; so much so that

他工作太忙了，以至于忘了吃饭。

tā gōng​zuò tài máng le, yǐ​zhì​yú wàng le chī​fàn.

He was so busy with work that he forgot to eat.

up to conjunction
indicating a sequence or range, extending down to or up to a certain point or item

他的书房里到处是书，桌子上、椅子上，以至于地板上。

tā de shū​fáng lǐ dào​chù shì shū, zhuō​zi shàng, yǐ​zi shàng, yǐ​zhì​yú dì​bǎn shàng.

There were books everywhere in his study: on the desk, on the chairs, and even on the floor.

Frequency
Movie subtitles
7.01 per million appears in 3% of films
Written text
9.06 per million

Details
HSK 3.0
Level 7

Cross-References

Same as

Sources
Definitions
CC-CEDICT
Frequency data
SUBTLEX-CHBCC Corpus (BLCU)