The term “deaning” does not appear in any standard Tagalog dictionaries.
Please write in the comments section below in which context you’ve encountered this word.
Pakisulat sa ibaba kung saan nakita ang salitang ito.
In English, “deaning” could be performing one’s duties as a school dean.
Ang “dean” ay namamahala sa pamamatnubay at pagpapayo sa mag-aaral.