The closest synonym would be counterfeit.
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".
Some materials are natural, man-made ones are artificial. Often the man-man ones are called "synthetic."
second syllable "thet"
Superb is another word for excellent. Superb is another word for excellent.
Another word for shake is "Tremble".
synthetic
Another word for man made fibre is a synthetic fibre.
"Synthetic" could be another word for something that does not occur naturally.
Dead, Deceased, Synthetic, Man-Made, Inanimate
Another word for a SYNTHETIC resin is a plastic.
The word synthetic has three syllables. Syn-thet-ic.
There are three vowels in the word "synthetic" - "e", "i", and "a".
Accure is another word for isotretinoin, which is a synthetic retinoid, used to treat the most severe cases of acne that has failed to respond to other treatment.
Manufactured diamonds generally is another word for synthetic. A natural diamond can be flawless as can a synthetic. The difference is that the lab process tends to create differ ant imperfection than nature
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".
3
Some of the music these days seems synthetic. A synthetic oboe reed is not required to be wet before being played.