toppling adjective 1noun 1forms 3 adjective1 •That which topples.We analyzed data from continuous ambient vibration monitoring and concomitant crack aperture measurements at the Courthouse Mesa instability, a large toppling sandstone slab in Utah, USA. — 2024 noun1 •The act by which something is toppled.And in “Central Park in the Dark” and her haunting response to “The Unanswered Question,” Sokolow evokes more small-town anomie in spare shifts of ranks, topplings and rises. — 2008 formstopplings · more toppling · most toppling