Typing "cop" for "çöp": how typos are judged

Type "cop" when the answer is "çöp" and it is marked correct, with the proper spelling shown so you see what it should have been. The same goes for "isik" instead of "ışık". One slipped character is also forgiven, but only on words of five letters or more. Anything else is wrong.

Three outcomes, not two

An answer lands in one of three places:

  • Exact — correct, and no typo is flagged. Nothing is shown to correct.
  • Close enough — correct, but flagged as a typo, so the interface can show you the right spelling before moving on.
  • Not close enough — wrong, with the full consequences: mastery drops a level and the word is due again immediately.

The middle case is the one worth having. Marking it wrong would punish a keyboard problem as if it were a memory problem. Marking it correct silently would let you drift into learning the word without its diacritics, which is a different word.

Turkish characters

Diacritics are folded away for the comparison, and the dotless i is treated as equivalent to the dotted one. So an answer that differs from the target only in those respects is accepted. This covers the everyday case of typing on a keyboard that has no Turkish layout, or on a phone that keeps autocorrecting them out.

It works in both directions and in both languages, because the folding is applied to your answer and to the target equally before they are compared.

One slipped character, on longer words only

If your answer is within a single character of the target — one letter wrong, one missing, one extra — it counts, provided the target is at least five characters long.

The length condition is doing real work. On a three-letter word, a one-character tolerance would make "cat" match "cot", "cut" and "car". Those are different words, and accepting them would mean the app cannot tell whether you know which one you meant. On a nine-letter word, one wrong character out of nine is overwhelmingly a finger problem rather than a knowledge problem.

So short words have to be exact. If you are missing a three-letter word by one letter, you are being told something true.

What is not forgiven

Two or more slipped characters. Punctuation that is part of the stored answer, which is why a definition imported with a trailing semicolon will refuse everything you type. And an empty answer, which is never correct no matter what the target is.