The best replacement for odd is even.

The best alternatives to odd are rated as following:
★★★★★  even
★★★★  even functions
★★★★  adhd
★★★  conduct disorder
★★  even function
★★  even numbers
★  even java
★  neither functions
★  even harmonics
★  hdd
★  even matlab
★  eccentric
★  even degree
★  even c++
★  even trig functions
  even multiplicity
  even php
  rad
  even parity
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  even hours of sleep
  even polynomial
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  add
  even program
  pdd

Your alternative for odd is not listed? Suggest!
Speaking about odd, one probably shouldn't forget about adhd.

Other search terms related to odd and their ratings are:
★★★★★ adhd
★ add
★ aspergers
adults
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odd
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