Tepefying is a term that means to make something less lively or less active. Some antonyms that can be used instead of tepefying include invigorating, stimulating, energizing, exciting, and enlivening. Invigorating is a word that means to give life or energy to someone or something. Stimulating can be used to describe something that is well designed to encourage or prompt action or thought. Energizing is a term that is used to describe someone or something that is stimulating or inspiring. Exciting and enlivening are two words that have similar meanings, which are to make something feel more alive or make it appear more lively. Overall, using antonyms for the word tepefying can help to make your writing more engaging and interesting.