Answers from double-definition clues were chosen so that “centigrade” (as the Celsius temperature scale was officially known until 1948) read down from cell 5 and “Fahrenheit” read upwards from cell 41, illustrating the equivalence of 5 °C and 41 °F. The point at which the two scales agree is -40. “Minus forty” also refers to ignoring clue 40 across, which referred to the puzzle’s title as an anagram of CENTIGRADE and FAHRENHEIT with one A missing.
Conventions: * = anagram, < = reversal
| No | Answer | Explanation or [other defined word] |
|---|---|---|
| Across | ||
| 1 | AFRIC | [AFRIT] |
| 6 | AIR-TRAP | AIR + PART < |
| 11 | PROTEST | [PROTIST] |
| 12 | ERUV | UV after ER |
| 13 | SA SA | (AS + AS) < |
| 14 | TENONER | (O + (I)NTERNE(t)) * |
| 15 | LEAST | [LEASH] |
| 16 | STRUNT | [SCRUNT] |
| 18 | OILY | [ONLY] |
| 20 | DAIL | DAIL(y) |
| 21 | AETHER | [ANTHER] |
| 22 | TAO | TA + O’ |
| 23 | RESH | [REST] |
| 25 | SIR | (R + IS) < |
| 27 | NOUGAT | [NOUGHT] |
| 28 | ECCO | (s)OCCE(r) < |
| 31 | GAEA | [GAGA] |
| 32 | SERIES | [SERIFS] |
| 33 | ROBES | BORES * |
| 34 | EMBRAID | (ADMIRE + B(ard)) * |
| 36 | CEDE | homophone of SEED |
| 37 | MAGI | MAGINOT − NOT |
| 38 | GO-AHEAD | [GODHEAD] |
| 39 | TANTRUM | ’T + ANTRUM |
| 40 | TANGRAM | T(hat) + ANAGRAM − A; ref. title of puzzle as (CENTIGRADE + FAHRENHEIT − A) * |
| 41 | FARLS | [EARLS] |
| Down | ||
| 2 | FRAENA | F(o)R (s)A(l)E (i)N (w)A(r) |
| 3 | ROSALIA | SAILOR * + A |
| 4 | ITA | (gr)ATI(tude) < |
| 6 | ASTILBE | TIL after AS + BE |
| 7 | REN | CURRENT − CURT |
| 8 | RUN-UP | RUN UP |
| 9 | AVENGER | AVENIR with GE for I |
| 10 | PORTERHOUSE | (THE POOR SURE) * |
| 13 | SLIDING SEAT | (DIGEST SNAIL) * |
| 18 | OLOGY | APOLOGY − AP |
| 19 | AT SEA | (wh)AT’S EA(sily) |
| 22 | TOC EMMA | (COMMENT + A) * − N |
| 24 | STARDOM | TSARDOM with first letter moved |
| 26 | ICE BEER | RICE BEER − R |
| 29 | CREDAL | CRADLE * |
| 30 | URBAN | 2 meanings |
| 35 | AIR | RIA < |
| 36 | CHA | CHAIN − IN |