形容詞 inconsistent:

1. displaying a lack of consistency
2. not capable of being made consistent or harmonious
3. not in agreement
   同義詞：discrepant

1. Such behavior is inconsistent with her high-minded principles.
   這樣的行為與她情操高尚的原則是矛盾的。
2. His accounts of the event were inconsistent.
   他對那件事情的說法前后不一致。

in.con.sis.tent

adj.（形容詞）
Displaying or marked by a lack of consistency, especially:
缺乏一致性的：表現(xiàn)為缺少一致性的或以缺少一致性為標(biāo)志的，尤指
Not regular or predictable; erratic:
不規(guī)律的或無法預(yù)知的；不穩(wěn)定的：
例句：
inconsistent behavior.
前后不一致的行為

Lacking in correct logical relation; contradictory:
矛盾的：缺少正確的邏輯關(guān)系的；矛盾的：
例句：
inconsistent statements.
矛盾的表述

Not in agreement or harmony; incompatible:
不一致的或不協(xié)調(diào)的；不相容的：
例句：
an intersection inconsistent with the road map.
一個(gè)與交通圖不符的十字路口

Mathematics Not solvable for the unknowns by the same set of values. Used of two or more equations or inequalities.
【數(shù)學(xué)】 不可解的：同一系列值的情況下由于有未知數(shù)而無解的。用于兩個(gè)或兩個(gè)以上的等式或不等式

【引伸】
in.consis.tently
adv.（副詞）
<參考詞匯><同義詞>inconsistent,incongruous,incompatible,discordant,uncongenial,discrepantThese adjectives mean being in marked disagreement.
這些形容詞都含有明顯不一致的意思。
Inconsistent implies lack of uniformity,as in overall purpose, design, or content:
Inconsistent 表示缺乏一致性，如在整體的目的、安排或內(nèi)容上：
例句：
Occasional hostility is inconsistent with true friendship.
偶爾的敵意與真正的友誼不相協(xié)調(diào)。

Incongruous suggests a lack of harmony and especially a lack of suitability or appropriateness, as between one person or thing and another:
Incongruous 表示不和諧，尤指如人或事間的不合適或不適當(dāng)：
例句：
Negotiating with terrorists is incongruous with national policy.
和恐怖分子進(jìn)行談判不符合國家政策。

Incompatible implies conflict or an inability to coexist,as between persons of differing temperaments or things marked by fundamental differences or contradictions:
Incompatible 指沖突或無法共存，如在不同性情的人之間或存在著根本區(qū)別或沖突的事物之間：
例句：
.Here are two, not only different, but incompatible things, called by the same name, liberty. (Abraham Lincoln).
.這有兩個(gè)不僅存在差別而且無法共存的事物，但它們卻有一個(gè)共同的名字，叫作自由. （亞伯拉罕·林肯）。

Discordant implies a clash, as of temperaments, opinions, or principles:
Discordant 指性情、看法或原則上的抵觸、沖突：
例句：
.[Imagination] reveals itself in the balance or reconciliation of opposite or discordant qualities. (Samuel Taylor Coleridge).
.［想象］ 在平衡或扭轉(zhuǎn)對立或不一致的品質(zhì)中顯現(xiàn)出來. （薩繆爾·泰勒·克勒略支）。

Uncongenial suggests a lack of sympathy, as in character or nature:
Uncongenial 指在性格或天性上缺乏共同之處：
例句：
.Realpolitik thinking is uncongenial to American political discourse. (Christopher Layne).
.現(xiàn)實(shí)政治的思想和美國的政治演說是性質(zhì)不同的. （克里斯托弗·雷納）。

Discrepant stresses divergence where similarity or consistency is expected:
Discrepant 強(qiáng)調(diào)期望相似或一致時(shí)卻出現(xiàn)了背馳現(xiàn)象：
例句：
The two witnesses gave widely discrepant testimony.
兩個(gè)證人提供的證詞出入很大