Natural formation.
If you are referring to synthetic meaning "man-made", then the opposite would be "natural" or "genuine". There is another usage of synthetic, in which the opposite is "analytic".
The opposite of aggravated (upset) could be peaceful or unbothered.The opposite of the past tense verb form (made worse) would be improved or alleviated.
The opposite of improve (transitive) would be to worsen, damage, or degrade.The opposite of improve (intransitive) would be to deteriorate, decline, or depreciate.Antonymous for the word improve are the following:destroyworsendegraderreducedeterioraterecede
An opposite of the word "to" is from.
The opposite of hand made is machine made.
The opposite of made is "destroyed".
The opposite of hand made is machine made.
Well made.
A person or thing has either not made a debut, is making a debut, or has already made a debut.... there is no opposite.
The opposite of a sale is a purchase (normally both are made concurrently).
Natural formation.
he has made no announcement of the opposite.
Incompatible.
Natural formation.
squidward
If you are referring to synthetic meaning "man-made", then the opposite would be "natural" or "genuine". There is another usage of synthetic, in which the opposite is "analytic".