subter

Mane (Îngilîzî)

Adv

down below, underneath

Prep

1. (ablative, with-accusative) directly below an area that is under another; underneath, (figuratively) below inferior
2. (ablative, with-ablative, with-accusative) underneath, (figuratively) below inferior

Hevwate

subter supter

Werger

per sota

unterwärts

below

daarbeneden

debaixo

debajo

por debajo

dessous

en dessous

au dessous de

sotto

beneden

altında

Wekî (IPA) tê bilêvkirin

[ˈsʊp.tɛr]

Etîmolojî (Îngilîzî)

From sub (“under”) + -ter.
The use where subter governs the accusative is from instrumental/ablative and accusative and comes from Proto-Indo-European *-teros used adverbially. The use where it governs ablative is by analogy with sub.