| ANGELFALLS | How 10's 18 25 starts abrupt current decline (5,5) |
| HITTHEGROUND | & 25 Start immediately with enthusiasm, like one trying to jump safely out of moving bus will do? (3,3,6,7) |
| GASCHAMBER | Chat room for 10s (3,7) |
| REGIMENTAL | US 10 cracked following British 10s under a military arrangement |
| CORRUGATED | In England in 1832, what new building material cost 5 pounds 10s per 100 square feet? (10,4) |
| ANGLOSAXON | Language in a slogan that's silly - Number 10's spinning (5-5) |
| BARBIROLLI | Halle 10's cutting remark to team about drum beat (10) |
| IMPOSSIBLE | Hopeless politician taken in by Number 10's nasty lies about Belgium (10) |
| LESLEYGORE | Singer of the first words of 18-, 25- and 48-Across |
| FIVEFOURTHREE | Final part of 18 25 - hit song (4,4,5,3,3) |
| LEONIDAS | King at 18 25 one Christmas needing boost |
| TEAPOTS | 4-23-14-10-3-18-25 |
| POBOX | Many a bus. address, and a literal hint to 18-, 25-, 47- and |
| INGEST | Assimilate 17 5 a 18 25! (6) |
| TICTACTOE | Pencil game that hints at this puzzle's theme, found in the first and last letters of 18-, 25- and 4 |
| TAUTOLOGICAL | Like the names of 18-, 25-, 40- and 50- Across vis-a-vis the bracketed languages |
| KITTENS | Christopher, on 10s having an attack of 4s (7) |
| SNOOPS | 10s turn over clubs (6) |
| DICK | 10 set up 1000 10s (4) |
| TUCKSHOPS | Gathers drink ingredients where 10s buy food (4,5) |
