| HOURSINADAY | There never seem to be enough of these; in fact, it's always the sum of the circled entries |
| DROPIT | "That'll be enough of that subject" ... and a hint to solving the answers to starred clues |
| HUMERI | Exercise these in fact to work fruit machine (6) |
| HELLO | Adele hit with the lyric "when I call, you never seem to be home" |
| KEYS | They never seem to be where you left them when you're heading out the door |
| SNAKES | Samuel L Jackson had quite enough of these creatures on his Plane in 2006 (6) |
| SAMPLES | Vacuous shoppers have eaten more than enough of these freebies, perhaps |
| SIT | (two words with 3) Enough of (these) troubles |
| SAT | (two words with 3) Enough of (these) troubles |
| HYPOTENUSE | According to Pythagoras' theorem, "the square of the - of a right-angled triangle is equal to the sum of the squares of the other two sides" (10) |
| ITSNOTHING | Another way to say "Don't mention it," or what can be said about each of the circled entries |
| PYTHAGORAS | Mathematician responsible for the right-angled triangle theorem about the square of the hypotenuse being equal to the sum of the squares of the other two sides |
| BEETHOVEN | Composer of 32 piano sonatas; the name of one of them is revealed in the circled entries |
| BREAKFAST | First meal of the day; it might include any of the circled entries |
| FRATERNITY | Campus organization; its name might include any of the circled entries |
| TRACE | Ground plan of a fortification; an amount of rain too small to be measured; the sum of the diagonal elements of a square matrix; or, a line marked by a recording instrument (5) |
| BADGERSTATE | Another nickname for the title place; its real name is revealed in the circled entries |
| WILLSMITH | Tommy Lee Jones' co-star in a 1997 sci-fi hit; the movie's title is revealed in the circled entries |
| RINGOSTARR | Beloved drummer of the title group; the circled entries spell out the craze associated with them |
| KEATS | Poet whose name is an anagram of the circled entries |