1. having become softer, gentler, or more relaxed with age or experience
2. having a smooth, rich, or pleasant quality (especially of sound, taste, or color)

1. past tense of mellow; became or made softer, gentler, or more pleasant

Examples

• The wine had mellowed beautifully after years in the cellar.
• His mellowed voice was perfect for radio broadcasting.
• She became more mellowed and patient as a grandmother.
• The harsh critic had mellowed considerably over the years.
• The mellowed autumn light filtered through the trees.
• Age had mellowed his once fiery temper.
• The cheese mellowed during the aging process.