As your vocabulary grows, you will become more familiar with words of differing lengths that begin with various letters. They don't even need to be fancy-schmancy words. Many utilitarian words serve very nicely, particularly when your goal is rack balance. Scrabble, Words With Friends, and other crossword games aren't just about scoring large numbers of points. They're also about stopping your opponent from doing the same.
That is the, "To be, or not to be," question of all word games. There are usually many words you can make. Sometimes, there won't be many at all. Just remember, sometimes it pays to make a word with fewer than the maximum number of points possible because it sets you up better for your next turn.
In the Oxford English Dictionary, the longest word is FLOCCINAUCINIHILIPILIFICATION, which means "the act of deeming or estimating something as worthless. Other dictionaries contain the word PNEUMONOULTRAMICROSCOPICSILICOVOLCANOCONIOSIS, which is coal miners' "black lung disease."
If you think that's bad, German is worse. The longest word in German is DONAUDAMPFSCHIFFFAHRTSELEKTRIZITÄTENHAUPTBETRIEBSWERKBAUUNTERBEAMTENGESELLSCHAFT. FLOCCI..., at 29 letters, and PNEUMONO ..., at 45 letters, combined aren't that long! None of these words will fit on a crossword game board. Scrabble boards are 15 letters across, so the longest word, which also doubles as the word worth the most points, possible is OXYBENPHUTAZONE. It requires eight letters already be placed, none of them on any of the three triples or the double-letter squares, and it scores 1,778 points. No one has ever achieved it.
The best way is to use our tool. Of course, you should never use it while playing competitive games because it would count as looking up words in the Official Scrabble Player's Dictionary prior to playing. But, if you wanted to ask yourself, "Which words from letters in my rack can I make?" during a friendly Words With Friends game, then that would not be bad form. Outside of competition, study as many words as you want using the website. It's an invaluable training tool!
Pick any seven-letter word. Write it down on a piece of lined notebook paper. Then, try to come up with as many words as possible using just those seven letters. Practice this with many more seven-letter words. When you have to make words with these letters that you have, you won't always have the space or available hooks to play a bingo. It pays to know how to make words with letters in your rack.
You can check your word list by using the website. Don't feel bad if you don't get them all the first time around. Like anything involved with crossword games, these skills must be practiced. What would you do, for example, if you had Y, Y, Z, S, G, Blank, and W in your rack? Would you know that "syzygy" was a valid word for Scrabble? Would you also know to create 105 other words from letters Y, Y, Z, S, G, Blank, and W?