The grid letters omitted from wordplay in clues spelt out FOURTH DIMENSION. After blacking out cells to form the second grid with 90-degree symmetry, it is divided into its four quadrants, each a self-contained crossword grid. Changing two letters in each quadrant then produces WIDTH, HEIGHT, LENGTH and TIME running inward from the corners.
Conventions: * = anagram, < = reversal
| No | Answer (omitted letters) | Explanation |
|---|---|---|
| Across | ||
| 1 | FASTED | F + WASTED − W |
| 6 | SNI(T)C(H) | SNIC(k) |
| 10 | SUIT | SQUIT − Q |
| 11 | SHAY | YAHS’ < |
| 12 | (F)ADERS | READS * |
| 13 | AVAIL | AVA + IL |
| 14 | TRAT | TART < |
| 15 | SC(R)AGGED | SCAG + AGED − A |
| 16 | H(O)NSH(U) | HH around NS |
| 18 | JOHN | JOHN + NY = JOHNNY |
| 21 | STOSSES | S + TOSES around S |
| 24 | MISSI(S)H | (HISS + I’M) < |
| 28 | TING | TIN + G(ong) |
| 31 | ETALON | LATE < + ON |
| 32 | (D)E(MEN)T(I)A | ATE < |
| 33 | GOBO | GOB + O |
| 35 | SPOOT | PO in SOT |
| 36 | SIG(N)ET | SIT − T + GET |
| 37 | L(I)EN | LENDL − (D + L) |
| 38 | ETHE | (t)ETHE(r) |
| 39 | SERVER | SEVER around R |
| 40 | S(O)RELY | (cros)S + R + ELY |
| Down | ||
| 1 | FI(F)THS | SHIFT * |
| 2 | AGAR | A(sda’s) + GR around A |
| 3 | SEDANS | SANS around ED |
| 4 | TSETSES | SESTET < around S |
| 5 | DISC(U)S(S) | DISCS |
| 6 | STA(R)R | STAR |
| 7 | NAVAJOS | (SON around JAVA) < |
| 8 | (T)HIGHS | S after HIGH |
| 9 | (H)YADES | (SE(e) + DAY) < |
| 11 | SAGO | SAGOIN − IN |
| 17 | (O)BIT | B(u)I(l)T |
| 19 | NEMO | OMEN < |
| 20 | SIG(N)ORE | ORGIES * |
| 22 | THE(I)STS | THESS around (eigh)T |
| 23 | STAGGER | STAG + GER(e) |
| 24 | MO(D)ELS | MOLES with L moved down |
| 25 | SI(M)PER | ’S + I + PER |
| 26 | BLO(N)DE | B + LODE |
| 27 | KNOTTY | KNOTTY ASH − (AS + H) |
| 29 | N(E)ON | NO + N |
| 30 | OTTER | (trainsp)OTTER(s) |
| 34 | BELL | 2 meanings; ref. “clear as a bell” |