The correct spelling of the word is "Amplify." It is spelled as [am-pluh-fahy] in the International Phonetic Alphabet (IPA). The word means to make something louder or stronger than it already is. The incorrect spelling of "Amplificate" might be a result of confusion with other words like "Amplification" and "Amplificator." However, it is important to use the correct spelling while communicating in any formal or informal setting to avoid confusion and misunderstandings.