confirmation, approval, sanction
luminosity is synonymous to brightness
Decrease
Syonymous is the adjectival form of synonym.
You've spelled the word "synonymous" correctly :)
The ratification of the 19th amendment caused great controversy.
Posterior?
extend
"High-quality and luxury are often synonymous in the minds of consumers looking for premium products."
The root word of ratification is "ratify," which means to formally approve or confirm something.
Some synonyms of the word 'ratification' are declaration, confirmation, and statement. These are just a few of the better examples of synonyms for this word.
I believe you are trying to spell "synonymous" (same meaning).
Necessary, important