The phrase "most frou frou" describes something as being excessively fancy or decorative, but what are some antonyms for this phrase? Instead of being over the top and ostentatious, you might use words like simple, plain, or minimalist. Similarly, you could describe something as practical, functional, or unfussy. Another option might be to use words like understated, subdued, or modest to convey the opposite of frou frou. Ultimately, the antonyms you choose will depend on the context and tone you want to convey, but these options offer a starting point for describing things that are decidedly un-frou frou.