aberration
absorbed attention
absorption
alienation
application
complex
compulsion
concentration
contemplation
deep study
deep thought
derangement
engagement
engrossment
fascination
fixation
fixed idea
hang-up
hypercathexis
idee fixe
immersion
insanity
intentness
involvement
irresistible impulse
madness
mania
meditation
morbid drive
obsession
obsessive compulsion
possession
preoccupation
prepossession
profound thought
rapt attention
ruling passion
single-mindedness
studiousness
study
submersion
tic
cacoethes
passion
monomaniac
contrariness
defensiveness
depersonalization
feeble-mindedness
flitch
gamboge
grab bag
histrionism
home-sickness
inveteracy
megalomania
overcompensation
politicking
proneness
reification
ruminating
schizophrenia
scrofula
self-delusion
self-enjoyment
self-incrimination
self-inspection
sirocco
stubborness