the.com/boost

means To push something up or forward — a lift in amount, energy, or signal strength.

from An American coinage from the 1800s, likely built on 'boost' as in to shove something from below — think hoisting a kid up onto a wall by cupping your hands under their foot. The exact root is murky (some link it loosely to 'boast' or dialectal lift-words), but the physical sense of shoving upward came first; the figurative sense — boosting morale, signal, sales, confidence — rode in right behind it.