Was heißt »flau« auf Englisch?

Das Adjektiv flau lässt sich wie folgt von Deutsch auf Englisch übersetzen:

Deutsch/Englische Beispielübersetzungen

Nach einer flauen Sommersaison belebte sich das Geschäft.: After a slow summer season, business began to pick up.
Mir ist ganz flau.: I feel queasy.
Antina hatte ein flaues Gefühl im Magen.: Antina had a sinking feeling in her stomach.
Ich habe noch ein paar Stunden totzuschlagen, und mir wird langsam flau im Magen. Holen wir uns was zu essen!: I've got a few hours to kill and I'm starting to feel a bit peckish. Let's get a bite to eat.

abgeschmackt:: corny; outrageous; vulgar
banal:: banal; commonplace; trite
beliebig:: arbitrary
billig:: fitting
fade:: flavorless; insipid
geistlos:: dull; inane; stupid
hohl:: hollow
komisch:: comic
kontrastarm:: low-contrast
kotzübel:: queasy
lahm:: lame
lasch:: lackadaisical; limp
lau:: lukewarm; mild; tepid
leer:: empty
mulmig:: queasy; uneasy
nichtssagend:: anodyne; empty; meaningless; nondescript; platitudinous; vacuous; vague
oberflächlich:: glib; superficial
öde:: abandoned; deserted; empty
platt:: flat
schal:: insipid; stale
schlapp:: weary
schlecht:: bad; shoddy
seicht:: fordable; shallow; shoal; wadeable
speiübel:: queasy
trivial:: trivial
übel:: bad; sick
unentschieden:: draw
wohlfeil:: inexpensive

The future has many names. For the weak, it is the unattainable. For the fearful, it is the unknown. For the brave, it is chance.
My brother is strong, but my sister is weak.
She's weak for quitting smoking.
His pulse is very weak.
She has a weak stomach.
Tom suddenly went weak at the knees.
I like strong coffee more than weak coffee.
I like strong coffee more than weak.
She's weak.
What are your weak points?
I'm feeling weak.
Be very tolerant or don't be at all. Go the good way or the bad way. You're too weak to walk the middle path.
Tom's German is still weak.
The signal is weak, so an amplifier is used.
You're still weak.
My heart is weak.
He was too weak.
He's weak.
His daughter's health was weak.
My pulse is weak.