two incompatible things (or people); (going together like) oil and water
shy; diffident; retiring; reserved
to have a lot on one's shoulders; to bear a lot of responsibility
training (for a skill, job, sport, etc.); practice; working out; workout; (strength, weight) training
to annoy; to cause trouble
energy; vigor; vigour; vitality
everyday life; daily life
up and down; lightly; nimbly; casually; (strolling about) without a care
munching; crunching; (lightly) scratching (an itch)
last (i.e. immediately preceding); previous; pre- (e.g. premodern); before; before; earlier
carelessly; thoughtlessly; inadvertently
common use; communal use; sharing
double room; room shared by two people; shared room
library (usu. single-room); small library
gathering spot; haunt; rendezvous; meeting place; hang-out
stipulation; prescription; normal (unit of normality); compulsory exercise (in gymnastics); compulsory routine
standing in a row; forming a line; alignment
collective responsibility; joint liability
discipline; punishment; reprimand
to steal a glance (at); to look furtively (at); to take a peek (at)
prison; jail; gaol; penitentiary
behaviour; behavior; conduct
inferior; base; vulgar; low grade; lower class
living thing; organism; creature; biology
same room; sharing a room; occupying the same room
labor; labour; work; service
joint together; opposite; facing
to be covertly swapped; to be replaced (e.g. with a counterfeit)
to recollect; to remember; to imagine; to guess; (arch.) to admire (e.g. beauty); (arch.) to praise