half-life
the pitcher goes so often to the well that it is broken at last
Rome wasn't burned in a day
procrastination is the thief of time
time-waste
not worth the powder
chronophagous
drift off
coquet
30 minutes
out of favour
time-consumingly
half-hour
faff
pestilence
bang one's head against a brick wall
erosion
canker
stridetime
battel
half-hourlong
fiddlefuck
burn daylight
whiffle
diddle
fool around
beat off
take one's sweet time
lose it
take up
fart-arse
overslip
perendinate
defocus
crap out
downtime
strung out
take one's eye off the ball
uncertain period
dick around
chronophage
hum and haw
quarantine
half-hourly
knock the stuffing out of
for hours
for lack of trying
nine-day wonder
footle away
boondoggle
contabescent
take long
drop in the bucket
bleed
unspeedy
transfiguration
the game is not worth the candle
dally
hourful
dawdle
forever and a day
time-consuming
lose the plot
slow
lead someone a dance
take it into one's head
beat one's meat
caprice
untime
staircase wit
pedantry
distract
overhaste
disfavour
sublative
poky
time period
hang upon
Rome wasn't built in a day
overstand
forever
unlearn
pains
dilatory
period
period of time
jack around
laggard
pokey
half-time
sloggingly
go off the boil
make good time
spout off
semihourly
hassle