Meaning of the word "loom large" in English

What does "loom large" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

loom large

US /luːm lɑːrdʒ/
UK /luːm lɑːdʒ/
"loom large" picture

Idiom

to be an important and often worrying problem or factor

Example:
The threat of job losses continues to loom large for many employees.
His past mistakes began to loom large in his mind as the deadline approached.