The word "knerr" is spelled with a silent "k" and is pronounced as /nɛr/. The "k" is not pronounced, but it changes the pronunciation of the "n". Without the "k", the "n" sound would be pronounced as /n/ like in "nice". However, with the "k" before it, the "n" sound becomes a nasalized "n" pronounced as /ñ/ like in "Bonne". "Knerr" is a relatively rare surname of German origin and can be traced back to the 16th century.