| MAINLY | Introduce trendy line during month as a rule (6) |
| IDES | Changed side mid-month, as a Roman (4) |
| INJECT | Introduce trendy judge without filling court (6) |
| INSTIL | Introduce trendy source of booze - only one left (6) |
| LEADIN | One introduces trendy star at opening |
| HELIUM | Element first discovered as an unknown spectral line during observation of a solar eclipse in 1868 |
| BEIRUT | City divided by the so-called Green Line during the civil war (6) |
| STROLL | Sort out lines during a leisurely walk (6) |
| ULTIMO | The previous month, as used in formal correspondence (6) |
| TESTEE | One in line, during COVID-19 pandemic |
| DEIFIC | Poem I penned in month, as divine |
| LONGER | Like supermarket lines during busy hours |
| ONTIME | Research institute erected in twelve months, as expected (2,4) |
| JUNGLE | Shopping deal ends during month in Amazon, say (6) |
| MALADY | Boy, during month, gets illness (6) |
| MIDDAY | Noon did change during month in spring (6) |
| JUSTLY | During month, set limits without bias (6) |
| JORDAN | During month golden seed finally becomes large flower |
| SHOPLIFT | In a store, appropriate work on line during time at work |
| NIKOLATESLA | Croatia was approved this month as the 20th nation to adopt the euro as its currency; what Croatian-born inventor was played by Ethan Hawke in a 2020 biopic? |