poor (at); weak (in); not very good (at); not one's cup of tea; not one's favorite
bitter smile; wry smile; forced smile; strained laugh
unpleasant; disgusting; loathsome; shameful; scandalous
awareness that somebody will be hard to deal with; awareness that one is not good at something; (feeling) not up to doing something
sour (expression); (lit.) as if having swallowed a bitter bug
slightly bitter (taste); bittersweet (memory, experience, etc.)
the most helpful advice may be difficult to listen to; (lit.) good medicine tastes bitter
bittern; concentrated solution of salts (esp. magnesium chloride) left over after the crystallization of seawater or brine
bitter melon (Momordica charantia); bitter gourd
Japanese timber bamboo (Phyllostachys bambsoides); giant timber bamboo; madake; Simon bamboo (Pleioblastus simonii)
wormwood (Artemisia absinthium); absinthium; absinthe wormwood; absinthe
Ixeris dentata (species of the daisy family)
horned melon (Cucumis metuliferus); kiwano; African horned cucumber; jelly melon
Ixeris dentata var. alpicola (mountain flower in the dandelion family)
creeping lettuce (Ixeris stolonifera)