Yes, alternative meanings besides immerse can be given for baptizo...

There is dipping,

There is the ritual washings....which I would guess would be easiest done by immersion.


There is dyeing....and immersing something in dye usually works better than sprinkling or pouring dye on something.

There is the sense of something being totally covered up, as in Nebadchadnezzar's case of being baptized with the dew of the morning if I remember right.

Submersion, wetting and purifying might also be alternate meanings...



Listen... the OP was a pet peeve which was adequately answered. No need to fight the same old tired battle again.

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Pergamum


"If a commission by an earthly king is considered a honor, how can a commission by a Heavenly King be considered a sacrifice?"
-- David Livingstone