The term 'I second that!' is a phrase used to express agreement with a statement or opinion. The crossword solutions for this term are 'AMEN' (4 letters), 'MeToo' (5 letters), and 'HearHear' (8 letters). 'AMEN' is a Hebrew word meaning 'so be it' or 'TRULY' and is commonly used in religious contexts. 'MeToo' is a movement that began in 2017 to raise awareness of sexual assault and harassment, and to support survivors. 'HearHear' is an expression of agreement or approval, often used in British English.