1. 缺乏勇气的；没有胆量的；无毅力的；懦弱的
If you describe someone as gutless, you think they have a weak character and lack courage or determination.

1. lacking courage or vitality

e.g. he was a yellow gutless worm
a spineless craven fellow

2. weak in willpower, courage or vitality

Synonym: namby-pambyspinelesswishy-washy