| Letting anyone play | 19 |
| Letting a little light in, maybe | 32 |
| Letting (up) | 12 |
| Letting (up on) | 15 |
| Letting | 7 |
| Letters-to-the-troops content | 29 |
| Letters, to Plato | 17 |
| Letters, of a sort | 18 |
| Letters, maybe | 14 |
| Letters, for the most part | 26 |
| Letters, etc. | 13 |
| Letters, collectively | 21 |
| Letters, catalogs, etc. | 23 |
| Letters' partners | 21 |
| Letters' partner | 20 |
| Letters' other half | 23 |
| Letters' numbers | 20 |
| Letters you push a button to send | 33 |
| Letters written by someone who's shy? | 41 |
| Letters written by someone who's a bit shy? | 47 |
| Letters written by Pontius Pilate | 33 |
| Letters within the theme entries that are, literally, next to nothing | 69 |
| Letters with some flowers | 25 |
| Letters with Nor or Sask | 24 |
| Letters with messenger or transfer | 34 |
| Letters with a view | 19 |
| Letters with 6 | 14 |
| Letters with 0 | 14 |
| Letters with "messenger" or "transfer" | 58 |
| Letters with ''messenger'' or ''transfer'' | 74 |
| Letters where Jackie Robinson lettered | 38 |
| Letters uttered with relief | 27 |
| Letters used with a fictitious name | 35 |
| Letters used to label axes in maths class | 41 |
| Letters used to avoid listing | 29 |
| Letters used in the catalog indexing for Matador Records | 56 |
| Letters used in dating | 22 |
| Letters used by Pythagoras | 26 |
| Letters used by geometers | 25 |
| Letters under TUV, perhaps | 26 |
| Letters under TUV, on many phones | 33 |
| Letters under TUV | 17 |
| Letters under a deer silhouette | 31 |
| Letters under a 4 | 17 |
| Letters under 4, on some dials | 30 |
| Letters to ___ ('90s rock band) | 35 |
| Letters to the Coast Guard | 26 |
| Letters to stars | 16 |
| Letters to introduce a prince | 29 |
| Letters to creditors? | 21 |
| Letters to be seen on 2018 Super Bowl T-shirts | 46 |
| Letters to answer? | 18 |
| Letters to answer one's inviting letter? | 44 |
| Letters to an on-line jokester | 30 |
| Letters to a mathematician | 26 |
| Letters to a creditor | 21 |
| Letters that should never be published? | 39 |
| Letters that resemble pitchforks | 32 |
| Letters that please angels | 26 |
| Letters that please an angel | 28 |
| Letters that pack a wallop | 26 |
| Letters that once preceded "Nabisco" | 46 |
| Letters that often follow @ | 27 |
| Letters that need answering? | 28 |
| Letters that must be bought on "Wheel of Fortune" | 59 |
| Letters that might precede a dollar sign | 40 |
| Letters that might precede a blogger's point of view | 56 |
| Letters that might lead to sticker shock | 40 |
| Letters that might follow @ | 27 |
| Letters that might come before AA? | 34 |
| Letters that may follow "dot" | 39 |
| Letters that make you feel important? | 37 |
| Letters that make angels happy | 30 |
| Letters that look like tridents | 31 |
| Letters that look like H | 24 |
| Letters that lack stamps | 24 |
| Letters that help a letter sorter | 33 |
| Letters that get things moving | 30 |
| Letters that generally may be omitted from a URL | 48 |
| Letters that follow directions? | 31 |
| Letters that flunk | 18 |
| Letters that explode | 20 |
| Letters that don't need stamps | 34 |
| Letters that don't go to the post office | 44 |
| Letters that create hurdles for lispers | 39 |
| Letters that could precede a dollar sign | 40 |
| Letters that could finger you? | 30 |
| Letters that come before www.ariespuzzles.com (yep, I just did it) | 66 |
| Letters that come at the end of the week | 40 |
| Letters that change hands in April? | 35 |
| Letters that cause trouble for lispers | 38 |
| Letters that can't be found at the post office | 50 |
| Letters that can officially stop fights | 39 |
| Letters that can arrive at any time | 35 |
| Letters that aren't cohesive? | 33 |
| Letters that are the epitome of ease | 36 |
| Letters that are not at the post office | 39 |
| Letters that are hard to read? | 30 |
| Letters symbolizing sleep | 25 |
| Letters sung by kids | 20 |