What does arsis mean?
Arsis is a technical term from classical prosody denoting the accented or raised portion of a metrical foot — the strong beat that gives verse its rhythmic pulse. Its opposite is the thesis, the unaccented or lowered portion. The pair derives from Greek words for "lifting" and "placing," reflecting how ancient theorists imagined the foot rising on the stress and falling on the weak syllable. In music, arsis also names the upward movement of a conductor's hand marking a strong beat. The word appears almost exclusively in academic writing on poetry, classics, and musicology, and readers are unlikely to encounter it outside those fields. Because different traditions have at times assigned the labels inconsistently, careful writers define which part of the foot they mean. For students of meter, however, arsis offers a precise vocabulary for describing where stress falls — a small word that carries considerable analytical weight.
nounIn prosody, the accented or raised part of a metrical foot — the strong beat, as opposed to the unaccented part (the thesis). More broadly, the upward movement of a conductor's hand marking a strong beat in music.
- The accented or strong part of a metrical foot in classical and English prosody.
- The upward stroke of a conductor's baton indicating a strong beat in music.
"The student marked each arsis in the hexameter to hear where the stress naturally fell."
"Classical scansion treats the first syllable of dactyl as the arsis, carrying the primary stress."
"The conductor's crisp arsis set the tempo for the orchestra's entrance."
Pronounced /ˈɑːrsiːz/, following the standard Latin/Greek third-declension plural pattern seen in words like crisis → crises. Avoid confusion with the homograph spelling of a vulgar English word; scholarly contexts make the intended sense clear.
"The treatise compared the arses of iambic and trochaic feet across several languages."
"Arsis" literally means "lifting" in Greek — the same root that gives us thesis ("a placing down"), so every poetic foot is a tiny act of raising and lowering.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of arsis
Arsis comes from the ancient Greek ἄρσις (arsis), meaning "lifting" or "raising," from the verb αἴρειν (airein), "to lift." It entered English scholarly vocabulary in the early modern period alongside thesis (Greek "a placing down"), the two terms together describing the rise and fall of the metrical foot. The same Greek root airein underlies a family of English words including thesis-related compounds such as hypothesis and synthesis, all built on the notion of placing or setting.
How arsis is actually used
A technical term confined to prosody, music theory, and classical scholarship; rare in everyday speech. Note that in some modern musical usage the terms have been applied inconsistently, with some writers reversing arsis and thesis relative to their Greek originals, so context matters when reading older sources.
Easily confused with arsis
Thesis is arsis's opposite: it denotes the unaccented, lowered part of a metrical foot, whereas arsis is the accented, raised part.
Ascesis means rigorous self-discipline or ascetic practice, unrelated to rhythm or meter despite its similar spelling.