The term 'POWER, SO TO SPEAK' can be represented by three crossword solutions: Octane (6 letters), JUICE (5 letters), and MUSCLE (6 letters). Octane is a hydrocarbon found in gasoline, and is used to measure the power of an engine. JUICE is a slang term for electricity, which is a form of energy that powers many devices. MUSCLE is a metaphor for physical strength, which is a type of power that can be used to move objects or accomplish tasks.