Marxism

total concentration in something, being totally absorbed insomething

immersing oneself in something completely, totally absorbing oneself in something

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

deep, profound

a piece of research, a study, investigation

to research, to study

deep, close, thick, profound