(ठोकर खाना / चूक जाना / भूल-चूक)
to fall or almost fall while you are walking or running / to make a mistake when you are speaking or trying to achieve something
Syn- Mistake, Fall, Falter, Wobble, Blunder, Topple
E.g-1. He wasn’t the only one in the group to stumble.
2. I stumbled because I wasn’t looking where I was going.
3. I stumble on that last word because of the way his life was ended.
4. Dozens of policemen were killed in October when they stumbled into an ambush.