| PALPITATION | Irregular or rapid heartbeat |
| FLUTTER | Informal word for a bet or wager; or, an abnormally rapid heartbeat (7) |
| FEAR | Cause of a rapid heartbeat, perhaps |
| TACHYCARDIA | Abnormally rapid heartbeat |
| TWIRL | A curly figure, flourish or squiggle; a twiddle with the thumbs; a pirouette or rapid gyration; something wound, such as a coil; or, a spin of a baton (5) |
| HOTHOUSES | Conservatories, orangeries, vineries or other humid Wardian case-like indoor gardens in which to rear tender plants; or, environments that encourage development or rapid growth, like said glass buildi |
| TRIM | Word that relates to conditioning a ship for sea, cutting away irregular or unwanted parts, decorating clothing or preparing a candle wick for use (4) |
| OCCASIONAL | Word meaning irregular or periodic, thus used to describe a casual worker or an infrequently used table (10) |
| UNEVEN | Irregular or inconsistent -- and odd? (6) |
| EROSE | Irregular or jagged |
| UNEVENLY | In an irregular or fitful manner (8) |
| PATCHY | Irregular or inconsistent in form (6) |
| ERRATIC | Irregular or unpredictable in behaviour (7) |
| LICHI | 'Chili' - irregular or alternative spelling of fruit |
| ANOMALOUS | Irregular, or deviating from rule (9) |
| TANTIVY | Thought to be onomatopoeic of galloping hooves, word for a gallop or rapid ride; or, a hunting cry at full tilt (7) |
| CHUTE | Word for a waterfall or rapid in a river originally, later a steep channel or slope down which stuff is shot (5) |
| SAULT | Waterfall or rapid |
| AIRDROP | Superior aid distribution or rapid transport (7) |
| TRANSIT | Mass or rapid follower |
