What's April 21 Wordle. Let us know how you felt about the word in the comments. Here's the wordle answer for april 20. The word of the day is oxide. If you didn't guess correctly today, . The april 21st wordle answer is oxide. Here is today's wordle, on thursday april 21st, and next week i will be writing. Oxidation is a process where a compound in which oxygen is bonded to one or more electropositive atoms.