Gossamer

Pick a word. It hangs at the heart of a web, ringed by its own kin — and one strand that pulls the opposite way. Find the odd one.

How: the words strung around the web are all near-neighbors of the center — they sit close on purpose, the way "related" looks in vector space. One of them is the antonym, the opposite hiding right in the cluster. Proximity won't give it away — you won't spot it by looks. Read the meanings. Stuck? Spend a sentence — tap a word, then show me in a sentence, and let the context settle it.

Pick a word to unweave

Go ahead and grab one you don't fully know — that's the point. You'll have context to lean on.