资料来源 : pyDict

令人警惕的,警告的,使警戒的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Sematic \Se*mat"ic\, a. [Gr. ?, ?, sign, token.]
   Significant; ominous; serving as a warning of danger; --
   applied esp. to the warning colors or forms of certain
   animals.