IPA: /ˈɡrʌbˌsteɪk/
KK: /ˈgrʌbˌsteɪk/
Money or supplies given to someone to help them start a business or project, with the expectation of sharing the profits later.
The investors provided a grubstake to the new entrepreneur to help launch her startup.
To provide financial support to someone, expecting to receive a portion of the profits in return.
The investor decided to grubstake the new startup, hoping for a good return on his investment.
Past: grubstaked
Past Participle: grubstaked
Grubstake is formed from 'grub' (from Old English 'grubban', meaning to dig or to search) and 'stake' (from Old English 'staca', meaning a post or support). The term originally referred to a supply of provisions or money given to someone to help them dig for gold or resources, thus supporting their search.
Think of 'digging' ('grub') for something valuable and having a 'stake' or support in that endeavor — that's why grubstake means support for someone searching for resources.
No commonly confused words.