形容詞 incoherent:

1. without logical or meaningful connection
2. unable to express yourself clearly or fluently
   同義詞：tongue-tied

1. A temporary state of mental confusion and clouded consciousness resulting from high fever, intoxication, shock, or other causes. It is characterized by anxiety, disorientation, hallucinations, delusions, trembling, and incoherent speech.
   譫妄一種暫時精神混亂和神志不清的狀態(tài)，由高燒、酒醉、休克、震驚或其它原因?qū)е隆Ｆ浒Y狀是：焦慮、迷失方向、發(fā)生幻覺、妄想、顫抖和說胡話
2. He was so drunk that he was quite incoherent.
   他喝得這樣醉，說起話來語無倫次。
3. Incoherent fragments of a story.
   一個敘述不連貫的故事
4. I heard an incoherent mumble.
   我聽到了不連貫的低語聲。

in.co.her.ent

adj.（形容詞）
Lacking cohesion, connection, or harmony; not coherent:
前后不一致的，不連貫的：缺少凝聚性、連貫性或協(xié)調(diào)性的；不一致的：
例句：
incoherent fragments of a story.
一個敘述不連貫的故事

Unable to think or express one`s thoughts in a clear or orderly manner:
無條理的，紊亂的：無法清楚或有條理地去思考與表達某人的思想：
例句：
incoherent with grief.
由于悲傷而語無倫次的

【引伸】
in.coher.ently
adv.（副詞）
in.coher.entness
n.（名詞）