(as|) far as {sb} [know]
1
used to express one's uncertainty about the statement one has made as there might be something that makes it untrue
- As far as we know, the company is expanding its operations.
- As far as he knew, the concert had already started when he arrived.
- As far as she will know, the event will take place in the afternoon.
- They are planning a surprise party for her, as far as he knows.
- The company is expanding its operations, as far as we know.