Acid letters
The crossword clue "Acid letters" is answered by LSD, a 3-letter entry. Used 6 times across 5 distinct years; most recently in 2026; first recorded in 1998. It appears in 3 publications in the xd corpus. Every figure on this page comes from the collection data itself, never from a guess.
The answer
LSD
3 letters. See every clue for this answer on the LSD answer page.
Used 6 times across 5 distinct years; most recently in 2026; first recorded in 1998. It appears in 3 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.
Other clues for LSD
Every other clue in this collection answered by LSD, most used first.
- Acid - used 157 times, most recently in 2026
- Leary's drug - used 75 times, most recently in 2026
- Psychedelic drug - used 47 times, most recently in 2026
- Hallucinogenic drug - used 34 times, most recently in 2025
- Trippy drug - used 34 times, most recently in 2026
- '60s hallucinogen - used 30 times, most recently in 2026
- "Dropped" drug - used 17 times, most recently in 2026
- '60s psychedelic - used 14 times, most recently in 2026
- Hallucinatory drug - used 14 times, most recently in 2026
- It was dropped in the '60s - used 14 times, most recently in 2024
- Hallucinogenic initials - used 13 times, most recently in 2026
- Trip producer - used 13 times, most recently in 2018
- 1960s hallucinogen - used 12 times, most recently in 2015
- Hallucinogen - used 12 times, most recently in 2026
- '60s hallucinogenic - used 11 times, most recently in 2021
- Drug that's "dropped" - used 11 times, most recently in 2025
- A hallucinogen - used 10 times, most recently in 2015
- "Acid" used in some trips - used 10 times, most recently in 2016
- Psychedelic drug, for short - used 10 times, most recently in 2015
- Timothy Leary's drug - used 9 times, most recently in 2023
- Trip starter - used 9 times, most recently in 2024
- '60s drug - used 8 times, most recently in 2016
- Cause of some trips - used 8 times, most recently in 2026
- Flashback drug - used 8 times, most recently in 2015
- Tab for a trip - used 8 times, most recently in 2022
- Timothy Leary's turn-on - used 8 times, most recently in 2016
- Trip instigator - used 8 times, most recently in 2008
- You might trip on it - used 8 times, most recently in 2026
- Drug initials - used 7 times, most recently in 2014
- Hallucinogen, for short - used 7 times, most recently in 2015
- It's illegal to drop it - used 7 times, most recently in 2014
- Start of some trips - used 7 times, most recently in 2020
- "Turn on, tune in, drop out" drug - used 7 times, most recently in 2019
- You can trip on it - used 7 times, most recently in 2015
- "Acid" drug - used 6 times, most recently in 2025
- Alternative to shrooms - used 6 times, most recently in 2025
- Cause of a trip - used 6 times, most recently in 2021
- Certain psychedelic - used 6 times, most recently in 2022
- Hallucination drug - used 6 times, most recently in 2013
- "Lucy in the Sky With Diamonds" subject, supposedly - used 6 times, most recently in 2021
- Something you might trip on - used 6 times, most recently in 2024
- Timothy Leary stash - used 6 times, most recently in 2012
- Trip inducer - used 6 times, most recently in 2021
- Trip letters - used 6 times, most recently in 2021
- Tripper's drug - used 6 times, most recently in 2016
- Tripper's turn-on - used 6 times, most recently in 2018
- Trippy stuff - used 6 times, most recently in 2026
Related clues
Clues in this collection of the same answer length that share a word with this clue, or match its answer pattern when no word is shared. Most used first.
- Genetic letters - RNA, used 265 times
- Debtor's letters - IOU, used 249 times
- Explosive letters - TNT, used 225 times
- Letters before an alias - AKA, used 194 times
- Alias letters - AKA, used 146 times
- Battleship letters - USS, used 124 times
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