"menacing" in the verb sense
1. endanger, jeopardize, jeopardise, menace, threaten, imperil, peril
pose a threat to present a danger to
"The pollution is endangering the crops"
2. menace
express a threat either by an utterance or a gesture
"he menaced the bank manager with a stick"
3. menace
act in a threatening manner
"A menacing person"
"menacing" in the adjective sense
1. baleful, forbidding, menacing, minacious, minatory, ominous, sinister, threatening
threatening or foreshadowing evil or tragic developments
"a baleful look"
"forbidding thunderclouds"
"his tone became menacing"
"ominous rumblings of discontent"
"sinister storm clouds"
"a sinister smile"
"his threatening behavior"
"ugly black clouds"
"the situation became ugly"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License