| INTRICATE | Complex, as a maze |
| ENTER | Begin, as a maze |
| THREAD | Work one's way through, as a maze |
| LABYRINTH | Bar thinly disguised as a maze (9) |
| THICKENS | Becomes more complex, as a plot |
| KNOTTIER | More complex, as a problem |
| KAFKAESQUE | Menacingly complex, as a bureaucracy |
| DEEPEN | Get more complex, as a mystery |
| BYZANTINE | As complex as the Roman Empire became? (9) |
| RELATIVITY | Trivial, yet as complex as Einstein's bag (10) |
| NISSENHUTS | NHS uses tin complex as service accommodation |
| DEEP | Complex, as thoughts |
| SEALED | Leased complex, as it's yet to open (6) |
| SUMMERHOUSE | Some use Rhum complex as holiday home (6,5) |
| UPTONOW | Nothing in uptown complex as yet (2,2,3) |
| YEOMANS | Big carp water at Linear's Guy Lakes complex (*as money) (7) |
| CLEW | Old word for a ball of yam; thread as a guide out of a maze/labyrinth; lower corner of a sail; or, one of the cords by which a hammock is suspended (4) |
| KNOT | A bend, bow, hitch, tie or other entwinement; a cluster of people; a maze-like pattern of flowers in a formal garden; a rosette; or, a tangle of hair (4) |
| MINOTAUR | Monster in a maze with the head of a bull and the body of a man (8) |
| ERROR | A wandering (of a maze, Cat. 64.115 ), a goof (peccatum, vitium) |
