The quality of being based on random choice or personal whim, rather than any reason or system.

An arbitrary decision can refer to a choice made without any logical reasoning or a set process.

तर्कहीन निर्णय

English Usage: His arbitrary decision to cancel the meeting surprised everyone in the office.

Hindi Usage: उसकी तर्कहीन निर्णय ने कार्यालय में सभी को हैरान कर दिया।