Capable of being protected by copyright; eligible to have copyright assigned to or claimed by the copyright holder.
From copyright (copy + right) + -able; emerged in 20th-century legal terminology as copyright law developed.
Determining what's copyrightable is surprisingly tricky—facts aren't, but the way they're written might be; ideas aren't, but expressions of ideas are; and courts constantly debate whether things like fonts, emojis, or AI-generated art qualify.
Complete word intelligence in one call. Free tier — 50 lookups/day.