abbreviate
accelerate
aggravate
approach
assemble
attend closely to
attend to business
be alert
be obsessed with
beef up
blow up
bring into focus
bring together
center
centralize
circumscribe
close
close in
close up
close with
cluster
coarct
collect
combine
come together
compact
complicate
compress
concenter
concentralize
concentrate on
concentrate the mind
concentrate upon
concentrated
concentration
condense
congest
congregate
consolidate
constant
constrict
constringe
contract
converge
cram
cramp
crowd
curtail
alter
change
change state
decrease
diminish
epitome
fall
image
lessen
minify
modify
ore
paradigm
prototype
turn
concentrates
concentrating
anhydrous
hydrochloric
intake
nitric
oxalic
sulfuric