| 1 | English | sluggish | Habitually idle and lazy; slothful; dull;... |
| 2 | English | -ish | Typical of, similar to, being like; Somewhat,... |
| 3 | Middle English | -ish | Alternative form of -yssh |
| 4 | Old English | -isċ | -ish |
| 5 | Proto-West Germanic | -isk | Creates adjectives from nouns |
| 6 | Proto-Germanic | -iskaz | Forms adjectives from nouns with the sense of... |
| 7 | Proto-Indo-European | -iskos | Characteristic of, typical of, pertaining to |