stumble /stumˈbl/

1. To take a false step or come near to falling in walking
2. To move or speak unsteadily or with hesitations
3. To err
4. To lapse into wrongdoing
5. To flounder
6. To come upon by chance or error (with across or on)

To disconcert

1. A trip
2. A false step
3. A lapse
4. A blunder

stumˈbler noun

stumˈblingly adverb

stumˈbly adjective

Apt to stumble or to cause stumbling

stumˈblebum noun (slang; orig and esp US)

An awkward, inept, ineffectual person

stumˈbling-block noun

1. An obstacle
2. A cause of perplexity or error

• terrorisations
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