How to Find an Anagram
By hand it comes down to three moves. Past seven or eight letters, the solver is faster, and it can also tell you there is nothing.
Sort the Letters
Write the letters in alphabetical order. LISTEN becomes EILNST. So does SILENT, and so does ENLIST. Two words that give the same sequence are anagrams, without exception.
That is exactly what this site does. Every word is filed under its sorted letters, which replaces a million comparisons with a single lookup.
Spot the Letter Groups
Some runs travel as a block. TRIANGLE and INTEGRAL move the same TRI from one end of the word to the other. ARTICLE and RECITAL do the same with RTIC.
Place the rare letters first. A Q, an X or a Z narrows the field so hard that it almost names the word on its own.
Know When to Stop
Five letters allow 120 arrangements. Eight letters allow 40 320. Nobody works through those by hand, and most of the time there is nothing to find, because most English words have no anagram at all.
Out of 239,364 current words, 76,757 share their letters with another one. For the rest, the solver offers the words one letter away and the shorter words built from the same letters.
Why So Many Words Have No Anagram
Out of 239,364 current words, 76,757 share their letters with another. Most of the dictionary has no twin, and that is no accident.
Two things decide it. Length first, because every added letter divides the odds of landing on a combination that already exists. Our dictionary holds 2,842 groups of five letters and 27 of fifteen.
The letters next. A word built on frequent letters, A, E, I, N, R, S, T, has a fair chance of meeting another. A word that carries a K, a W or a Z starts with a handicap nothing makes up for.
What the Solver Looks for Besides
When a word has no exact anagram, the search does not stop there. Every page also gives the words one letter away, in both directions, and the shorter words that can be built from the same letters.
That is often where the thing you were after turns up. Drop one letter from STONE and you get NOTE, TONE or ONES. Add one and you get STONES, HONEST or TENONS.
Names count as words. The Social Security Administration file is loaded into the same base, so a search crosses both without being asked.