形容詞 meaningless:

1. having no meaning or direction or purpose
   同義詞：nonmeaningful

1. His promises were just so much meaningless talk.
   他許諾的都是空話。
2. Incorrect, meaningless, or unwanted information in input, output, or memory.
   無用數(shù)據(jù)，無用單元，無用信息在輸入、輸出或存儲方面不正確的、無意義的或不需要的信息
3. Irrelevant or meaningless data generated by a computer along with desired data.
   無用數(shù)據(jù)計(jì)算機(jī)產(chǎn)生的與所需數(shù)據(jù)不相干或無意義的數(shù)據(jù)
4. Inarticulate or meaningless talk or sounds.
   含糊不清的聲音口齒不清的或無意義的談話、聲音

mean.ing.less

adj.（形容詞）
Having no meaning or significance.
無意義的，無價值的

【引伸】
mean.inglessly
adv.（副詞）
mean.inglessness
n.（名詞）
<參考詞匯><同義詞>meaningless,senseless,mindless,irrational,pointless,purposelessThese adjectives mean lacking import, direction, or purpose.
這些形容詞都含有無意義、無方向或無目的意思。
Meaningless andsenseless emphasize absence of meaning, significance, or motivation:
Meaningless 和senseless 強(qiáng)調(diào)缺乏意義、重要性或動機(jī)：
例句：
a verbose but meaningless explanation;
冗長而無意義的解釋；

例句：
senseless violence.
無意義的暴力。

Mindless applies to that which lacks the will and thinking capacity characteristic of a conscious being:
Mindless 用于指缺乏思考能力和意志的：
例句：
.the shrieking of the mindless wind. (John Greenleaf Whittier).
.沒頭腦的大風(fēng)的吼叫. （約翰·格林里夫·惠蒂埃）。

例句：
.We must dare to think about ‘unthinkable things’because when things become unthinkable, thinking stops and action becomes mindless. (J. William Fulbright).
.我們必須敢于思考‘不可想的事情’，因?yàn)槿绻虑樽兊貌豢上?，思想就會停止，行動就會盲? (J.威廉·富爾布頓特）。

Irrational implies a lack of accord with or a lack of reason or sound judgment:
Irrational 指缺乏理性或良好辨別、判斷能力的：
例句：
.It is the function of speech to free men from the bondage of irrational fears. (Louis D. Brandeis).
.是言論的作用使人們從無理性的恐懼中解脫出來. （路易D.布蘭代斯）。

Pointless andpurposeless stress the absence of an aim or end:
Pointless 和purposeless 強(qiáng)調(diào)沒有目的：
例句：
The host bored his guests with a long and pointless anecdote.
主人講述的冗長而毫無意義的軼聞使客人們都厭倦了。

例句：
She feels that her life is purposeless and empty.
她覺得自己的生活空虛且沒有方向