unfathomable

What does "unfathomable" mean?
Unfathomable describes something that is impossible to fully understand, comprehend, or measure. Think of the word's root, "fathom," which is a unit of depth used at sea; when something is unfathomable, it is like an ocean so deep that you cannot reach the bottom with a measuring line, leaving it mysterious and vast. It is typically used to describe complex human emotions, deep mysteries, or events that seem completely illogical or overwhelming. While it can be used for physical depth, it is most often used metaphorically for things that defy rational explanation.
"unfathomable" in conversation
Discussing a complex scientific theory
I’ve been reading about quantum entanglement for hours.
I’ve been reading about quantum entanglement for hours.
It’s truly unfathomable, isn't it?
It’s truly unfathomable, isn't it?
Used here to describe a concept that exceeds human logic.
Discussing a sudden life event
I still can't believe they just quit their job without a plan.
I still can't believe they just quit their job without a plan.
It’s unfathomable to me as well.
It’s unfathomable to me as well.
Used to express disbelief regarding someone's behavior.
"unfathomable" in a sentence
The ocean is unfathomable in some areas.
The ocean is unfathomable in some areas.
The reasons behind his sudden departure remain unfathomable.
The reasons behind his sudden departure remain unfathomable.
She possessed an unfathomable depth of patience that surprised everyone.
She possessed an unfathomable depth of patience that surprised everyone.