Definitions

fault line

NOUN

line of rock displacement

Synonyms

STRONGEST

rift

WEAK

break crack fault fault trace fault trend fracture geological fault split

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The fault line exposed now is that private credit is being offered to retail investors and wealthy individuals whose liquidity preferences are different from sophisticated, more patient institutional investors.

From MarketWatch • Feb. 26, 2026

He astutely flags “medical gatekeeping” as an emerging fault line.

From The Wall Street Journal • Feb. 8, 2026

"This is significant because it means the ground shaking near the fault line might be more intense than our current hazard models predict for these types of faults."

From Science Daily • Dec. 16, 2025

He cited safety concerns—the plant sits on a fault line.

From Barron's • Nov. 18, 2025

The fault line spreads and reaches my heart.

From "American Street" by Ibi Zoboi