default

詳細解釋：

de.fault

n.（名詞）
Failure to perform a task or fulfill an obligation, especially failure to meet a financial obligation:
未履行；拖欠：未執行任務或履行義務，尤指未履行財政上的義務：
例句：
in default on a loan.
拖欠貸款

Law Failure to make a required court appearance.
【法律】 未到庭：被要求出庭時未到席
The failure of one or more competitors or teams to participate in a contest:
棄權：一個或多個競爭者或運動隊未參加比賽：
例句：
won the championship by default.
由於別人的棄權而獲得冠軍稱號

Computer Science A particular value for a variable that is assigned automatically by an operating system and remains in effect unless canceled or overridden by the operator.
【計算機科學】 預設，默認：某一變數的特定值，由作業系統自動指定並持續有效，除非操作者取消它或使它無效
v.（動詞）
de.fault.ed,de.fault.ing,de.faults
v.intr.（不及物動詞）

To fail to do what is required.
未履行任務或責任
To fail to pay money when it is due.
未按期付款
Law
【法律】
To fail to appear in court when summoned.
受傳喚時未出庭
To lose a case by not appearing.
由於不到庭而敗訴
To fail to take part in or complete a scheduled contest.
棄權：未參加或完成預訂的比賽
v.tr.（及物動詞）
To fail to perform or pay.
未履行，拖欠
Law To lose (a case) by failing to appear in court.
【法律】 因未到庭而敗（訴）
To fail to take part in or complete (a contest, for example).
未參加或完成（例如，比賽）

<習慣用語>in default of
Through the failure, absence, or lack of.
因缺少，在缺乏…時：因為不足、缺少或缺乏
來源：
Middle English defaute
中古英文 defaute
from Old French [from past participle of] defaillir [to fail, grow weak]
源自 古法文 [] 源自defaillir的過去分詞 [失敗，變得虛弱]
de- [intensive pref.] * see de-
de- [加強語意的前綴] *參見 de-
faillir * see fail
faillir *參見 fail

【引伸】
default.er
n.（名詞）