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Try this tool called WordHippo. It can help you with word choice in many ways. Enter a word to find its opposite or other words that rhyme with it, or to find a different form of it (like the past tense of it). The tool can also give you examples of sentences containing the word. Try typing in a phrase that has you suddenly wondering “Can you say that in English?” For example, can you “take confidence” or can you only “have confidence”? (You can.)