twenty-five/eight adverb 1noun 1 adverb1 •(informal) Unceasingly.“Dang!” Tempest shook her head and rolled her eyes. “You make it sound like homie hangs downtown twenty-five/eight.” — 2002 noun1 •(informal) Unwavering constancy.“I hear you, but I can’t stay on her twenty-four-seven. I won’t.” “And I hear you, but she needs twenty-five-eight. You take the risk.” — 2009