Part 1.
besiege
harass, as with questions or requests
bestow
present
betoken
be a signal for or a symptom of
betrothed
pledged to be married
bilious
irritable as if suffering from indigestion
blanch
turn pale, as if in fear
Part 2.
bland
lacking stimulating characteristics; uninteresting
blatant
without any attempt at concealment; completely obvious
blighted
affected by something that prevents growth or prosperity
bluster
act in an arrogant, overly self-assured, or conceited manner
boast
talk about oneself with excessive pride or self-regard
bolt
run away
Part 3.
bouillon
a clear seasoned broth
brawn
the trait of possessing muscular strength
brooch
a decorative pin
brook
a natural stream of water smaller than a river
bucolic
idyllically rustic
bullion
gold or silver in bars or ingots
Part 4.
bulwark
a protective structure of stone or concrete
burgeon
grow and flourish
burnish
polish and make shiny
buxom
healthily plump and vigorous
cabal
a clique that seeks power usually through intrigue
cadaverous
very thin especially from disease or hunger or cold