Posterior?
Dorsal is the back , along the spine, i.e., a dorsal fin on a fish, a person laying on their back is said to be in a dorsal recumbant position.
"Program," "App," and "Application" are synonymous with "Software"
Opposite, reverse...
luminosity is synonymous to brightness
Dorsal comes from the Latin word dorsum, meaning the back.
The dolphin has a dorsal fin.
Decrease
Syonymous is the adjectival form of synonym.
You've spelled the word "synonymous" correctly :)
extend
Synonymous means having the same meaning as another word or phrase. Aggression is often believed to be synonymous with violence.
synonymous.