loom large
Appear imminent in a threatening, magnified form. For example, The possibility of civil war loomed large on the horizon, or Martha wanted to take it easy for a week, but the bar exam loomed large. This term employs loom in the sense of “come into view,” a usage dating from the late 1500s.
Words nearby loom large
lookout,
lookout mountain,
lookup,
looky,
loom,
loom large,
loom-state,
looming,
loon,
looney,
loonie