| Word | Definitions | Synonyms |
|---|---|---|
| subtle | (adjective) working or spreading in a hidden and usually injurious way | Synonyms: insidious, pernicious |
| (adjective) difficult to detect or grasp by the mind or analyze | Synonyms: elusive | |
| (adjective) able to make fine distinctions | - | |
| unsubtle | (adjective) lacking subtlety; obvious | Synonyms: broad |