| Lets the engine run | 19 |
| Lets the fingers do the talking? | 32 |
| Lets the fur fly? | 17 |
| Lets the lure fly | 17 |
| Lets the tears flow | 19 |
| Lets time improve | 17 |
| Lets touch it? | 14 |
| Lets touch them | 15 |
| Lets touch these | 16 |
| Lets touch this | 15 |
| Lets up | 7 |
| Lets use for now | 16 |
| Lets well enough alone | 22 |
| Lets, in tennis | 15 |
| Lett's neighbor | 19 |
| Letter | 6 |
| Letter #19 | 10 |
| Letter #22 | 10 |
| Letter "Y" wearer | 27 |
| Letter abbr. | 12 |
| Letter abbr. for gents | 22 |
| Letter abbr. that tells the reader there's something else in the envelope | 77 |
| Letter abbreviation | 19 |
| Letter accompanier (abbr.) | 26 |
| Letter accompanier: Abbr. | 25 |
| Letter add-on (Abbr.) | 21 |
| Letter add-ons (Abbr.) | 22 |
| Letter add-ons, for short | 25 |
| Letter add-ons: Abbr. | 21 |
| Letter addenda | 14 |
| Letter addenda (abbr.) | 22 |
| Letter addenda, for short | 25 |
| Letter addenda: Abbr. | 21 |
| Letter addendum, for short | 26 |
| Letter addition letters | 23 |
| Letter additions | 16 |
| Letter additions briefly | 25 |
| Letter addressees | 17 |
| Letter adjunct | 14 |
| Letter adjunct: Abbr. | 21 |
| Letter adornment | 16 |
| Letter afer kay | 15 |
| Letter after "sierra" | 31 |
| Letter after aleph | 18 |
| Letter after alpha | 18 |
| Letter after ar | 15 |
| Letter after beta | 17 |
| Letter after Beta in a society's name | 41 |
| Letter after cee | 16 |
| Letter after Charlie | 20 |
| Letter after chi | 16 |
| Letter after delta | 18 |
| Letter after elle in the Spanish alphabet | 41 |
| Letter after epsilon | 20 |
| Letter after ess | 16 |
| Letter after eta | 16 |
| Letter after ex | 15 |
| Letter after gee | 16 |
| Letter after gimel | 18 |
| Letter after iota | 17 |
| Letter after Juliet in a phonetic alphabet | 42 |
| Letter after ka in Spanish | 26 |
| Letter after kappa | 18 |
| Letter after kay | 16 |
| Letter after koph | 17 |
| Letter after lambda | 19 |
| Letter after November | 21 |
| Letter after Oscar | 18 |
| Letter after pee | 16 |
| Letter after phi, chi, psi | 26 |
| Letter after pi | 15 |
| Letter after psi | 16 |
| Letter after Quebec in a radio alphabet | 39 |
| Letter after rho | 16 |
| Letter after Sierra | 19 |
| Letter after sierra, in radio lingo | 35 |
| Letter after sigma | 18 |
| Letter after tau | 16 |
| Letter after teth | 17 |
| Letter after theta | 18 |
| Letter after upsilon | 20 |
| Letter after wye | 16 |
| Letter after Y, in England | 26 |
| Letter after yod | 16 |
| Letter after yodh | 17 |
| Letter after Z | 14 |
| Letter after zeta | 17 |
| Letter afterthoughts | 20 |
| Letter afterthoughts letters | 28 |
| Letter alternative | 18 |
| Letter amount | 13 |
| Letter and number meaning ''tops'' | 50 |
| Letter announcing a switch to Toro? | 35 |
| Letter appearing only in down answers; its opposite appears only in across answers | 82 |
| Letter apps. | 12 |
| Letter arrangement? | 19 |
| Letter attachment | 17 |
| Letter attachment? | 18 |
| Letter attachments | 18 |
| Letter attachments: Abbr. | 25 |