progress; advance; improvement; development
(mental) agony; anguish; suffering; distress
skip (bounding forward with alternate hops on each foot); skipping (over); skip (captain of a curling team); skipper
piling up; accumulating; forming a (huge) pile; lying in piles
root; source; origin; cause
increase; rise; growth; addition; increment
overcrowding; congestion; overpopulation; crammed (schedule); congested; busy
according to; due to; by (means of); because of; via; on the basis of
hygiene; sanitation; cleanliness; toilet; restroom; bathroom
abundant; plentiful; rich; ample
increase; multiplication; propagation; proliferation
to overflow from something full
fresh in one's mind; fresh in one's memory
to burn down (to the ground); to clear away by burning; to reduce to ashes; to burn off
thinning out; pruning; culling; infanticide
garbage disposal; refuse disposal; waste treatment
filth (esp. excrement, feces, urine); muck; waste; garbage; dirt; dust
to suit; to match; to become; to be like
to have; to possess; to own; to be endowed with
pathogenic bacteria; germ; pathogen
feeler; tentacle; antenna; touching (with one's hand); feeling; sensing
illness (usu. excluding minor ailments, e.g. common cold); disease; bad habit; bad behaviour; crazy; insane
to transfer (to a different place, group, etc.); to change; to move to the next stage (of a plan, etc.); to divert (one's attention) to; to focus on (something different); to spend (time); to let (time) pass
state; condition; the way things should be; ideal state; truth
brain inflammation; encephalitis; cerebritis
piece(s) of firewood (esp. chopped or split from logs); kindling (twigs, branches, etc.); firewood
residence; housing; residential building
preparation; arrangements; provision; getting ready; laying out (e.g. a meal)
delay; lag; falling behind; falling behind in; lagging behind in
difficulty; trouble; accident; disaster; fault; defect
(degree of) risk; riskiness; danger
many problems; various problems
continuous; continual; unceasing; incessant; without interruption
always; constantly; at all times; habitually
sense; idea; desire; concern; attention; care
to deepen; to heighten; to intensify
(many) trees; every tree; all kinds of trees
transport; transportation; conveyance; carriage