Reference Guide
Short words don't look impressive on the board, but they're what separates players who can always find a play from players who stall out on a tricky rack. This is the full reference — memorize even half of it and you'll start seeing plays you were missing before.
Two- and three-letter words are how strong players build "parallel" plays — laying a word directly next to an existing one so that it forms several short words at once across multiple rows. A single tile placement using a good 2-letter word can quietly add 15–20 points on top of whatever your main word scored. They're also your safety net: when your rack is full of awkward consonants and you can't find anything longer, a valid 2-letter word is often the only legal move that keeps you in the game.
This is the complete set recognized in the two major tournament word lists (TWL and SOWPODS/Collins). A few — like AA, ZA, and QI — look like typos the first time you see them, but they're all legitimate and worth committing to memory specifically because opponents often don't expect them.
There are hundreds of valid 3-letter words, so instead of dumping the whole list, here are the ones that consistently punch above their weight — either because they use awkward letters other words rarely take, or because they're commonly forgotten mid-game:
Notice the pattern: most of these exist specifically to give Q, Z, X, J, and V — the highest point-value tiles — somewhere legal to land when you can't build a longer word around them.
Don't try to memorize this in one sitting. Instead, the next few times you're stuck with a rack that has no obvious long play, scan for one of your letters plus a vowel and check it against this list before giving up on a turn. Over a few games it becomes automatic. If you want to check whether a specific set of letters can form one of these (or anything longer), the unscrambler tool will confirm it instantly — type your letters in with a ? for any blank tile and it searches the full dictionary, not just this shortlist.