hilt
/hɪlt; hɪlt/ n
1 handle of a sword, dagger, etc （刀剑、 匕首等的）柄. =>illus at sword 见sword插图.
2 (idm 习语) (up) to the `hilt completely 完全地; 彻底地
be up to the hilt in debt 债台高筑
be mortgaged up to the hilt, ie have an extremely high mortgage 抵押到极高的数额
I'll support you to the hilt. 我完全支持你.