Equal in proportion, quantity, size, etc.
Flat and level.
On equal monetary terms; neither owing nor being owed.
parallel; on a level; reaching the same limit.
On equal terms of a moral sort; quits.
Convenient for rounding other numbers to; for example, ending in a zero.
Without great variation.
Divisible by two.
To make flat and level.
In reality; implying an extreme example in the case mentioned, as compared to the implied reality.
Emphasizing a comparative.
Signalling a correction of one's previous utterance; rather, that is.
An even number.
Having an identical meaning.
Having a similar meaning.
Such that both its forms yield the same sequenced protein.
Of, or being a synonym.