形容詞 insipid:

1. lacking taste or flavor or tang
   同義詞：bland, flat, flavorless, flavourless, savorless, savourless, vapid
2. lacking significance or impact
3. lacking interest or significance
   同義詞：jejune
4. not pleasing to the sense of taste

1. An insipid or ill-natured person.
   討厭的家伙令人乏味且脾氣壞的人
2. The food was rather insipid, and needed gingering up.
   這食物缺少味道，需要加點作料。
3. Insipid; weak; wishy-washy.
   無味的; 缺乏生氣的; 軟弱無力的
4. Sickening or insipid in taste.
   (味道上)令人作嘔的，淡而無味的

in.sip.id

adj.（形容詞）
Lacking flavor or zest; not tasty.
乏味的：缺少味道或滋味；無味的
Lacking excitement, stimulation, or interest; dull.
枯燥無味的：缺乏激情、刺激或興趣的；枯燥的

來源：
French insipide
法語 insipide
from Late Latin onsipidus
源自 后期拉丁語 onsipidus
Latin in- [not] * see in-
拉丁語 in- [不] *參見 in-
Latin sapidus [savory] from sapere [to taste] * see sep-
拉丁語 sapidus [美味的] 源自 sapere [品嘗] *參見 sep-

【引伸】
in.sipid.ity
insip.idly
adv.（副詞）