"evener" in the adjective sense
1. even
divisible by two
2. even, fifty-fifty
equal in degree or extent or amount or equally matched or balanced
"even amounts of butter and sugar"
"on even terms"
"it was a fifty-fifty (or even) split"
"had a fifty-fifty (or even) chance"
"an even fight"
3. even
being level or straight or regular and without variation as e.g. in shape or texture or being in the same plane or at the same height as something else (i.e. even with
"an even application of varnish"
"an even floor"
"the road was not very even"
"the picture is even with the window"
4. even, regular
symmetrically arranged
"even features"
"regular features"
"a regular polygon"
5. even, regular
occurring at fixed intervals
"a regular beat"
"the even rhythm of his breathing"
6. tied, even, level
of the score in a contest
"the score is tied"
Source: WordNet® (An amazing lexical database of English)
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