How to detect Outliers in a set of Sentence Embeddings?

I have N sentences, hopefully most of them have the same semantic meaning.

I've encoded each sentence and now I have N embedding vectors. Probably most of the vectors are close to each other.

I've calculated pairwise cosine distance and now I have NxN distance matrix.

Based on this matrix, how do I find the outliers, i.e. sentences with very different meaning?

* N is small, let's say 10<N<100

languagetechnology outliers set