Japanese

Noun

あか ‎(katakana アカ, romaji aka)

1. 赤, 朱, 紅, 緋: (colour) red (reddish), scarlet, crimson, vermilion (vermeil), cinnabar, ruby-red (rubeus), cherry-red, cerise, cardinal-red, carmine, wine-red, claret-red, blood-red (sanguine), coral-red, cochineal-red, rose-red (rosy, damask), brick-red, maroon, rust-red (rusty), rufous-red, gules-red, rufescent.
2. 垢: dirt, grime
3. 銅: copper
4. 淦: bilge
5. 閼伽: water (old Japanese or used in Buddhism)
6. 亜科: subfamily

Prefix

あか ‎(romaji aka-)

1. 赤: entirely