(idiomatic) Barely visible because gone too quickly.

An expression of sorrow or sadness about the absence of a family member, close friend, lover or spouse.

A form of social anxiety characterized by compulsive concern that one might be missing opportunities for social interaction, novel experiences, profitable investments, or other favorable things.

carousel fraud

plural of missing trader fraud

Alternative form of blink-and-you-miss-it

plural of hit-or-miss transform

(mathematics) In morphology, an operation that detects a given configuration (or pattern) in a binary image, using the erosion operator and a pair of disjoint structuring elements.

(slang, archaic) To fail in one's plan or attempt.

(idiomatic) Alternative form of cannot see the forest for the trees