1. 不适当，不合适，不相宜；不适当的言行
2. 愚笨，笨拙，愚蠢；愚昧的言行
3. 无能，不胜任，不称职，不符合要求
4. 缺乏技巧

1. unskillfulness resulting from a lack of training

2. having no qualities that would render it valuable or useful;

   "the drill sergeant's intent was to convince all the recruits of their worthlessness"
   

1.无能;笨拙
If you refer to someone'sineptitude, you are criticizing them because they do something with a complete lack of skill.

ineptitude

e.g. ...the tacticalineptitude of the allied commander.
盟军指挥官战术上的无能

1. 不恰当,无能,愚蠢：19. impede 妨碍,制止 | 20.ineptitude 不恰当,无能,愚蠢 | 21. insinuate 暗示

2.

2. 不称职：inept 不适当的 |ineptitude 不称职 | ineptly 不适当地

3. ineptitude在线翻译

3. 愚蠢无能：lentitude 缓慢,懒散 |ineptitude 愚蠢无能 | incertitude 疑惑,不确定

4.

4. 无能,不称职：inept 无能的,不适当的 |ineptitude 无能,不称职 | inequity 不公正,不公平