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The definition of threaten

3 Definitions of: threaten

1. verb, to be a threat to
2. verb, to be a menacing indication of (something); portend
3. verb, to express a threat to (a person or people)
4. Show me some examples of this word: threaten
5. Show me the etymology of the word: threaten

Synonyms:	bully, intimidate, menace, terrorize, warn, cow, pressurize, browbeat, endanger, jeopardize	And more...
Antonyms:	defend, protect, promising

From Collins