Infra- and Under- are prefixes for beneath.
Please correct this if wrong.
The root-word for submerge is the prefix sub. The prefix meaning under and beneath.
Subhepatic, subtalar, and submandibular are medical terms with the prefix "sub-."
If you mean prefix, it is hypo-.
The term submarine combines the term "marine" and the prefix "sub" to form the word. Marine is a term that applies to the ocean or the sea, and the prefix sub means beneath or below. The submarine operates beneath the sea.
Inter is a prefix meaning 'between'.
Subcostal means below the ribs.
this is easy before, beyond, beneath, and there are many more are you 5.
Assuming you mean the prefix, then it means beneath or below (also inferior to).
Hypo Sub (submerge, subordinate, subhuman)
The latin Prefix 'Sub' can mean 'under', 'beneath', or 'below' (such as in the Word 'Subconscious'), 'inferior to', or 'part of' (such as in the Word 'Subhuman'), 'less than normal' (such as in 'Substitute'), or 'almost/nearly' (such as in the Word 'Subcentral').
A prefix is an affix placed before the root of a word. There is no 7-letter prefix for "unworthy". A synonym is a word with a similar meaning. Some 7-letter synonyms for "unworthy" are beneath, nothing & ignoble.
The prefix hypo- means under, beneath, or low So hypothermia means low body temperature, and a hypodermic syringe inserts its contents below the skin.