Phenomenal/fəˈnɑːmɪnl/ Definition 1 of 2Pro Tip 1/3Exceptional Quality Use when something or someone far exceeds normal expectations. Her athletic performance was phenomenal. Pro Tip 2/3Not for Regular Use Best saved for describing things that genuinely amaze you, to avoid overuse. The speed of technological advancement is phenomenal. Pro Tip 3/3Positive Connotation Carries a positive meaning, often expressing admiration or praise. The chef's new recipe had phenomenal flavors.