Synonyms of 'loom'
1 appearDictionary, emerge, hover
When someone or something appears, they move into a position where you can see them.
the bleak mountains that loomed out of the blackness
2 overhangDictionary, rise, mount
He loomed over me.
You can say that something rises when it appears as a large tall shape.
The building rose before him.
Someone or something that towers over surrounding people or things is a lot taller than they are.
He stood up and towered over her.
If the amount, value, level, or volume of something soars, it quickly increases by a great deal.
3 threatenDictionary, be close, menace
If something unpleasant threatens to happen, it seems likely to happen.
The threat of renewed civil war looms.
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He was waiting outside as she emerged from the building.
If you are menaced by someone, they threaten to harm you.
She is being menaced by her sister's boyfriend.
Thesaurus for loom from the Collins English Thesaurus
If something looms over you, it appears as a large or unclear shape, often in a frightening way.