Lost One's Cool is a phrase used to describe someone who has become overwhelmed with emotion and has lost their composure. The crossword solutions for this phrase are FREAKED (7 letters), PANICKED (8 letters), and FLEWINTOARAGE (13 letters). FREAKED means to become extremely agitated or disturbed, while PANICKED means to become suddenly filled with fear or anxiety. FLEWINTOARAGE is an anagram of the phrase 'went into a rage', which means to become extremely angry. All three words describe someone who has lost their cool due to an emotional outburst.