Knee jerk and Unthinking response

Knee jerk noun - A reflex extension of the leg resulting from a sharp tap on the patellar tendon.

Unthinking response and knee jerk are semantically related. In some cases you can use "Unthinking response" instead a noun phrase "Knee jerk".

Knee jerk and unthinking response are semantically related. Sometimes you can replace phrase "Knee jerk" with "Unthinking response", this phrases are similar.