beneath
preposition
[ bɪˈniːθ ]
• extending or directly underneath.
• "a 2.5-mile tunnel beneath the Alps"
• at a lower level or layer than.
• "beneath this floor there's a cellar"
beneath
adverb
• extending or directly underneath something.
• "a house built on stilts to allow air to circulate beneath"
• at a lower level or layer.
• "upper layers can be removed to reveal internal parts beneath"
Origin:
Old English binithan, bineothan, from bi (see by) + nithan, neothan ‘below’, of Germanic origin; related to nether.