| INCONCEIVABLE | So unlikely that it cannot even be imagined (13) |
| CASTIRON | Iron containing so much carbon that it cannot be wrought (4,4) |
| IMPRACTICAL | I'm realistic that it cannot be done (11) |
| UNMENTIONABLE | Singular underwear, it cannot be said (13) |
| BETRUE | "It-had-to-be-you;-I-wandered-around-and-finally-found-the-somebody-who;-Could-make-me-...,-could-make-me-be-blue;-And-even-be-glad,-just-to-be-sad-thinking-of-you"-(2,4) |
| BEYONDPARODY | Like something that's so absurd it can't even be satirized |
| IMPROBABLE | It's unlikely that a mischievous child can be dressed (10) |
| SAD | "...And even be glad just to be ___ thinking of you..." -Tony Bennett, "It Had to Be You" (1957) |
| GEORGE | Could be Clooney, could be Takei, could even be Melissa's surname (6) |
| END | The most distant place or time that can be imagined (3) |
| TALLSTORY | It's very unlikely that, ultimately, everything's blue |
| UNTHINKABLE | So unlikely as to be out of the question |
| AGNOSTIC | Improvised acting, so unlikely to be a 14? (8) |
| NONIRON | An easy-care shirt is so unlikely to be attractive |
| TORTOISE | Animal raced round it? So unlikely |
| SPAS | Places that are so relaxing you won't even be thinking about the price of being there |
| ARMHOLE | It can even be part of sleeveless garment (7) |
| BANTER | Teasing back-and-forth that may even be a bit flirty |
| CANTEEN | Cannot even contract for an eating place (7) |
| COHABITANT | Firm routine needed if cannot even stand roommate |
