| Aquarist | aquarist |
| Aquaristin | aquarist |
| Aquaristik | fishkeeping |
| Aquadest | distilled water |
| Aquarium | aquarium tank |
| Aquavit | aquavit |
| Squadrist | blackshirt |
| aquatisch | aquatic |
| Äquativ | equative |
| Aqualith | aqualite |
| Aquarell | watercolour watercolor |
| Aquarellist | watercolourist aquarellist watercolorist |
| Aquatinta | aquatint |
| Aquädukt | aqueduct |
| Quart | quart |
| Quarzit | quartzite |
| Säkularist | secularist |
| Askaris | ascaris ascarid |
| Havarist | disabled vessel |
| Purist | purist |