Hairbreadth and Inappreciable

Hairbreadth adjective - Showing little difference in the standing of the competitors.

Inappreciable and hairbreadth are semantically related. In some cases you can use "Inappreciable" instead an adjective "Hairbreadth".

Inappreciable adjective - Not perceptible by a sense or by the mind.

Hairbreadth and inappreciable are semantically related. Sometimes you can replace term "Hairbreadth" with "Inappreciable", this adjectives are similar.