1. Tested and proved to be reliable
   - tested, tried, tried and true

See also: dependable, reliable

• maturity-onset diabetes
• maturity-onset diabetes mellitus
• matutinal
• maty
• matzah
• matzah ball
• matzah meal
• matzo
• matzo ball
• matzo meal
• matzoh
• matzoh ball
• matzoh meal
• Maud Gonne
• maudlin
• Maugham
• maugre
• Maui
• Maui Island
• maul
• maul oak
• Mauldin
• maule's quince
• mauler
• maulers