Here are a few.
Agreeing, confirming, consistent, reconcilable, vouching, and concurring.
The simplest antonym for 'against' is 'for'.... or 'with' e.g. he was against the motion, he was for the motion. he was swimming against the tide , he was swimming with the tide.... But, against is a pretty generic word which can also be used like .- against the law... then again the antonym would be with the law ... so no antonym for against is sufficiently correct, it depends on the usage...
- Oppose - Be against
Can't really say there is an antonym for numbers but in my opinion, 4 or 16 is likely to be a number that can go against 8.
Nuzzle means to lean, snuggle or rub against gently using the nose and mouth. An antonym for nuzzle is to flinch or recoil.
laboratory is a testing room for scientific reasons. So the antonym could be a building that is against testing or animal rights etc..
go against the grain. Make waves. Rock the boat.
The antonym for pronuclear is antinuclear. Pronuclear refers to something relating to the nucleus, while antinuclear refers to something opposing or against nuclear activities or technology.
The antonym of the word 'synonym' is 'antonym'.
An antonym means "opposite". So an antonym for the word synonym is antonym.
An antonym for "hostage" could be "freeman." While a hostage is someone held against their will, a freeman enjoys personal liberty and is not under coercion or confinement. This contrast highlights the difference between captivity and freedom.
The antonym for from is to. Because antonym means opposite.
now ____________ The word when does not have an antonym. Not every word has an antonym.