By far the most common method is by use of a dictionary. Many modern word processing programs have these built in. It should be noted that there are variations by region. For instance US English and UK English have slight variations though they are usually accepted and understood.
The correct spelling for the word modernise is modernize.
The correct spelling in English is "neutral."
The correct spelling of the English word warrenty is warranty. The term refers to a type of promise or guarantee usually in connection with a sale or contract.
The correct spelling for the English word "goodbye" is G-O-O-D-B-Y-E.
The correct spelling is "breaks." "Breakes" is not a valid English word.
Wonderful is the correct spelling.
No, the correct spelling is "rescuer." The word "rescuerer" does not exist in the English language.
That is the correct spelling of the word "energize" (power up, or encourage).
The correct English spelling would be Plough.
That is the correct spelling of the word "jewelry" (uncapitalized).
Jelly.
Photography.