| RUDDS | Name, thought from "redness", for the red-eyes related to roaches (5) |
| BORAX | Laundry product lethal to roaches |
| RADDLE | From "redness", a red ochre traditionally applied to a ram to mark the ewe that it tups (6) |
| ERYTHEMAL | Male with rough leathery sort of skin suffering from redness (9) |
| NYLON | Name, thought by some to derive from the combined names of the Big Apple and Square Mile, of a synthetic polymer; or, a sheer stocking made of this (5) |
| TWITE | Name, thought imitative of its note, for a brown linnet-like bird with a pale-pinkish rump, whose Latin epithet, Linaria flavirostris, means yellow-billed linen weaver (5) |
| TENCH | European freshwater fish with olivegreen skin and orange-red eyes (5) |
| RADII | Australian dead, surrounded by red eyes spoken and spokes! (5) |
| IDEAS | Thoughts from assistants finding answer further down (5) |
| OPTIC | Eye-related (5) |
| ADDER | Britain's only native venomous snake, with a black zigzag pattern along its back and red eyes (5) |
| OCULO | Eye-related prefix |
| UVEAL | Eye-related, in a way |
| FLASH | Possible cause of red eyes |
| PESTS | Ants, roaches and the like |
| LINUS | William Roache's son who has appeared with him in Coronation Street (5) |
| PHO | Name, thought to be from French for "fire" or from the Cantonese dish "fun", for a Vietnamese noodle soup (3) |
| OCTOTHORP | Name, thought to be referring to the eight points or "fields" of its symbol, for the hatch-like hash sign # found on a keypad and popularly used for tagging on social media (9) |
| BAT | Name, thought to be influenced by the Latin for "insect that shuns the light", of a flying mouse-like mammal that navigates the dark by means of ultrasonic echolocation (3) |
| LABRYS | Name, thought to be connected to a word for a maze, for the symbolic Minoan double-axe or pelekys (6) |
