1. arrested development, fixation, infantile fixation, regression, abnormality, abnormalcy

usage: an abnormal state in which development has stopped prematurely

2. obsession, fixation, preoccupation

usage: an unhealthy and compulsive preoccupation with something or someone

3. fixation, fastening, attachment

usage: the activity of fastening something firmly in position

4. fixation, fixing, preservation

usage: (histology) the preservation and hardening of a tissue sample to retain as nearly as possible the same relations they had in the living body

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See also: fixation (Dictionary)