Crossword clues for ___ letter. 4 letters:FOURNumber of letters in our contest answer--and the number of letters between certain pairs of letters in this puzzleZETALetter whose last three letters are also a letterSWAKLetters on a love letter's envelopeSWAKLove letter lettersUSPSLetters for letter carriersNYNYLetters on East Village lettersABBRLetters at the end of many a 3-letter word's clueATTNBusiness-letter lettersNYNYLetters on Broadway-bound lettersRSVPLetters on a letterOXOXCutesy letter-closing lettersREDAThe Scarlet Letter letterELIAPseudonymous essayist who said "The red-letter days, now become ... dead-letter days"SWAPIts letters replace the letters of 73-Across in the starred answers ... or, with 73-Across, event for bargain huntersZETAGreek letter that contains the next letter in the alphabetATTNLetters on lettersATTNBusiness letters lettersSWAKLetters on a love-letter envelopeXOXOLetters at the end of a love letterTEESMiddle letters in "letter"TEESLetters in letterETASGreek letters that become other Greek letters by adding B or Z or TH at the startLASTLike the third letters of three-letter answers (many of which you'll need to solve the meta)UCLALetters where Jackie Robinson letteredEXESLove-letter lettersATTNLetter-routing lettersENCLLetter-bottom lettersRSVPLetters to answer one's inviting letter?SWAKLetters on love lettersENCLLetter lettersIOTALetter that's one letter off from a stateATTNLetters on some lettersATTNLetters that help a letter sorterALDAActor whose four-letter first name shares three letters with his lastNYNYLetters on Manhattan lettersREDAThe letter in "The Scarlet Letter"RHEAGoddess whose name becomes her daughter's name when its first letter is moved between its third and fourth lettersWEDSWord that can be entirely spelled by moving from letter to adjacent letter on a QWERTY keyboardOMANIts first letter is unique among starting letters in the list of UN member statesSWAKSmoochy love letter lettersRSVPLetters on some lettersATTNLetters directing lettersATTNBus.-letter lettersETASGreek letters that rhyme with three other lettersUSPSLetters associated with lettersATTNLetter lettersXOXOLove letter lettersLIAMFour-letter name that, when read backward, can be any number of lettersOATHFour-letter word for a four-letter wordALFAFirst NATO phonetic letter, which sounds like the first Greek letter
