insecurity (n.)Related entries & more
1640s, "state of being unsafe," also "lack of assurance or confidence, apprehension," from Medieval Latin insecuritas, from insecurus (see insecure). Specific psychological sense is by 1917.
maladjustment (n.)Related entries & more
improvidence (n.)Related entries & more
decompensation (n.)Related entries & more
deprived (adj.)Related entries & more
1550s, "dispossessed," past-participle adjective from deprive. As a euphemism for the condition of children who lack a stable home life, by 1945.
immaturity (n.)Related entries & more
1530s, "untimeliness," from Latin immaturitatem (nominative immaturitas) "unripeness," from immaturus "unripe, untimely" (see immature). Meaning "lack of maturity" attested from c. 1600.
disproportion (n.)Related entries & more
incapacity (n.)Related entries & more
1610s, "lack of ability, powerlessness," from French incapacité (16c.), from Medieval Latin incapacitatem (nominative incapacitas), from Late Latin incapax (genitive incapacis) "incapable," from in- "not" (see in- (1)) + Latin capax "capable," literally "able to hold much," from capere "to take," from PIE root *kap- "to grasp." As a legal term (1640s), "lack of qualification," referring to inability to take, receive, or deal with in some way.
disaffect (v.)Related entries & more
insipience (n.)Related entries & more
early 15c., "lack of wisdom, foolishness," from Old French insipience (15c.) or directly from Latin insipientia "folly, unwisdom," from insipientem "unwise, foolish" (see insipient).