prefix · 4 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
Received-Pronunciation:/ˈhaɪpəʊ/
General-American:/ˈhaɪpoʊ/
Southern-England:Recorded audio is listed in the source snapshot.
rhymes with -aɪpəʊ
1
prefix
Meaning 1
Below; beneath; under.
Definition source: English Wiktionary via Wiktextract
Usage: morpheme
Topics: anatomy, medicine, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: sub-
Antonyms: none provided
2
prefix
Meaning 2
Deficient; less than normal.
Definition source: English Wiktionary via Wiktextract
Usage: morpheme
Topics: medicine, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: sub-
Antonyms: hyper-
3
prefix
Meaning 3
Designating oxoacid and oxyanions with a low amount of oxygen.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: per-
4
prefix
Meaning 4
Having a range which extends from a perfect fourth below the tonic to a perfect fifth above.
Definition source: English Wiktionary via Wiktextract
Usage: morpheme
Topics: entertainment, lifestyle, music
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
History
Etymology
From Ancient Greek ὑπο- (hupo-), combining form of ὑπό (hupó, “under”). Doublet of sub-. Etymology tree Proto-Indo-European *upó Ancient Greek ῠ̔πό (hŭpó) Ancient Greek ὑπο- (hupo-)der. English hypo-
Across languages
Translations
26 source translations are retained for this English entry.