Because this game uses words from wiktionary, the free online dictionary from Wikipedia, its choice of words are inconsistent. Some common abbreviations are present (rep, rec), others are not (perp), some obscure animals are okay (zebu), others are not (ibex), some Britishishism and Commonwealth words are there (tyre), others are not; i could go on and on. The issue is they feed from an inconsistent and incomplete dictionary for the game, which creates an inconsistent and incomplete game. When you try to report words it seems reassuring, but strangely youre able to report words even without internet access. Something tells me that button does nothing (You cant access the dictionary without internet, but you CAN report a word, strange, no?)
The inconsistency takes the fun out of the game for people who know words!