形容詞 ho-hum:

1. so lacking in interest as to cause mental weariness
   同義詞：boring, deadening, dull, irksome, slow, tedious, tiresome, wearisome

ho-hum

adj.Informal （形容詞）【非正式用語】
Boring and dull; routine:
無聊和乏味的；日常的：
例句：
.a ho-hum speaker who couldn`t capture the attention of the conventioneers.(Chicago Tribune)
.不能吸引與會者注意的差勁的演講者.(芝加哥論壇報)