The term BAM! is an exclamation of surprise or excitement, usually used to express joy or amazement. The crossword solutions for this term are POW (3 letters), KAPOW (5 letters), TADA (4 letters), and SOCKO (5 letters). POW is an onomatopoeia for a loud sound, such as an explosion or a punch. KAPOW is an intensification of POW, suggesting a more powerful sound. TADA is an onomatopoeia for a fanfare or a flourish, often used to indicate the completion of something. Finally, SOCKO is an intensification of TADA, suggesting a more powerful sound.