Below is a list of more than 250 words that speakers and writers of English often confuse. They are called false cognates because they sound or are written so similarly that they are often confused. Even if you are an excellent writer, you should read through this list; otherwise, how will you know if you are confusing any words? We will soon have a quiz that will help you check your knowledge of the most common false English cognates.
PONS Online Dictionary - look up words for free. Over 12 million words and phrases in 13 languages. Translation service. Plus, I got it cause it is one of the few online dictionaries that includes the F word (and translations).