Wiktionary
a. Lacking sufficient equipment
Usage examples of "underequipped".
Capital City and Manhattan, and left the rest of the great decaying city to the underfunded, underequipped American police.
Human-Conqueror world, while similarly underequipped and overvulnerable expeditionary forces did the same on other Human-Conqueror worlds.
She spoke as if she were still aboard her fully stocked ship, not aboard an underequipped shuttle retreating to its base.
If any demons were still on Kingdom, they would be demoralized and underequipped for battle.
Remember, they think your army is demoralized and inefficient and understrength and underequipped and all that.
The idea of anybody connected with space deliberately sending an underequipped ship on a long and dangerous voyage was beyond his belief.