IPA: /ɪkˈsɛsɪvnəs/
KK: /ɪkˈsɛsɪvnəs/
The quality of being more than what is necessary or reasonable.
The excessiveness of his spending led to financial problems.
Excessiveness → It is formed from "excess" (from Latin "excessus", meaning going beyond or surpassing) and "-iveness" (meaning the quality of being). The word "excessiveness" refers to the quality of going beyond what is normal or necessary.
Think of 'excess' as going 'beyond' and '-iveness' as the quality of that state — this helps you remember that 'excessiveness' means the quality of going beyond normal limits.