to be on the upswing	to increase suddenly
upswing	sudden upward movement/ trend, increasement
windswept	untidy because of being blown by wind
yardstick	a point of reference, a benchmark
uproarious	very noisy/ high-spiritous
wisecrap	a small, clever, unkind remark
unflappable	remaining calm in crisis
weather-beaten	exposed to hard weather conditions
to be at variance with sb	to disagree
watertight	that can be proved
walkover	an easy victory
watershed	a very important moment/ a turning point
walkabout	(informal) a stroll among crowd
watermark	a special sign that guarantees the authenticity of a note
walkout	a strike
from yesteryear	from the past years
upmarket	made for the rich
downmarket	made for the lowest classes
watchword	a slogan, a catch phrase
uppermost	the most important
verbosity	an instance of using too many words
wherewithal	the money you need to put into sth
whimsical	playful, capricious
venturesome	ready to take risk, daring
whiteout	weather conditions when one doesn't see clearly due to snow or fog
windfall	a stroke of luck, an unexpected fortune
workaday	ordinary, typical
to undercut sb	to offer goods at the lower price than one's competitor