Synonyms vocabulary puzzle alphabet soup worksheet. This is a puzzle in which a word is hidden in a list of random letters. There is an empty gap with a missing letter from that word. Look at the word bank below the sheet and select the word that matches the other letters. Later fill in the missing letter and circle the word. Improve your ESL vocabulary by learning the following words:dig, radica, shower, lady, lullaby, open, elevate, invert, gracious, make etc. This activity is suitable for children in 2nd, 3rd, 4th, 5th, 6th and 7th grades who wish to improve their vocabulary. Since it is a printable PDF worksheet, it can serve as supplementary material for homeschool and classroom use.