The word "frown upon" means to disapprove of something or someone. Its antonyms would be words like "approve of," "endorse," "praise," or "commend." These words convey a positive sentiment and indicate that the subject in question is being seen in a favorable light. Instead of frowning upon someone or something, we can choose to celebrate their successes, appreciate their efforts or ideas, and offer them our support. By adopting a more positive mindset, we can create a culture of acceptance and encouragement, rather than one of criticism and negativity. Ultimately, the words we use can shape our thoughts and actions, so let us choose them wisely.