Third person singular present tense of 'darkle'; becomes dark or grows darker gradually.
Regular present tense conjugation of 'darkle' with the '-s' suffix for third person singular verbs in English.
Even though 'darkles' is technically correct grammatically, modern English speakers almost never use it—we prefer 'darkens' instead, showing how some words fade from active use over time.
Complete word intelligence in one call. Free tier — 50 lookups/day.