3-letter words with S in the middle

There are 15 of them, out of 1,311 3-letter words in total, so roughly 1.1% of all three-letter words carry S in their centre slot. That puts it 13th out of 26 for this slot, squarely mid-table, which is usually the most useful place to be: enough words to contain the answer, few enough to read through.

The 2nd one. A three-letter word has 1 letters before the centre and 1 after it, so there is exactly one middle slot with no ambiguity. Even-length words have two centre letters and no single middle, which is why this page only covers 3, 5, 7, 9 letters.

Crossings. In a crossword, an intersecting entry hands you one letter in the middle of a 3-letter slot far more often than it hands you the first or the last. Scrabble does the same when you build through a tile already on the board.

Among 3-letter words with S in the centre, the most common opening letters are A (4), I (3), E (2), and the most common final letters are E (2), H (2), K (2). Scanning by first letter is usually the quickest way through a list this size.

No. Only standard dictionary words appear, which is the same standard Wordle, Scrabble, and crossword grids apply. Missing words are almost always names, hyphenations, or abbreviations.