introversion (n.)
- aloofness
- ambiversion
- backwardness
- bashfulness
- blankness
- chilliness
- coldness
- complexion
- constraint
- coolness
- cyclothymia
- depth
- detachment
- discreetness
- discretion
- distance
- ectomorphy
- endomorphy
- eversion
- extroversion
- frigidity
- frostiness
- humor
- iciness
- impassiveness
- impassivity
- inaccessibility
- inness
- internality
- internalization
- intussusception
- invagination
- inversion
- inwardness
- mesomorphy
- modesty
- pronation
- remoteness
- repression
- reserve
- restraint
- reticence
- retirement
- retroflexion
- retroversion
- reversal
- reversion
- revulsion
- schizothymia
- somatotype
- standoffishness
- subduedness
- supination
- suppression
- topsy-turvydom
- transposition
- unapproachability
- uncongeniality
- withdrawal
- withdrawnness