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7,169 words — headwords with part of speech, pronunciation, and a plain-language definition.

si possible: if possible
si seulement: if only, I wish, from your lips to God's ears
si tant est que: if … at all, assuming that, provided that, on the condition that
si tu le dis: if you say so
si tu savais: if you only knew
si tu veux la paix prépare la guerre: if you want peace, prepare for war
si tu veux la paix, prépare la guerre: alternative spelling of si tu veux la paix prépare la guerre
si tu vois ce que je veux dire: if you know what I mean
si vous le dites: if you say so
si vous saviez: if you only knew
si ça se trouve: maybe, perhaps
sial: sial
sialagogue: sialogogue
sialoglycoprotéine: sialoglycoprotein
sialorrhée: sialorrhea
siamois: Siamese twin; Siamese cat
siamois: Siamese (from Siam); Siamese, conjoined (attached to another human)
siau: bucket, pail
sibilant: sibilant; hissing
sibiler: to hiss; to wheeze; to make a sound like a whistle
sibo: a tree of species Nauclea pobeguinii
sibylle: sibyl (a pagan female oracle)
sibyllin: sibylline; obscure
sibyllinement: obscurely
sibélien: Sibelian
sibérien: of Siberia; Siberian
sic: sic (thus)
sicaire: hitman (someone hired to kill)
sicav: sort of French investment company; a share of such a company
siccatif: siccative
siccativité: siccativity
siccité: dryness
sichuanais: Sichuanese
sichuanais: Sichuanese (Mandarin dialect)
sicilien: Sicilian (of, from or relating to Sicily, Italy)
sicilien: Sicilian (the Sicilian language)
sicilienne: siciliana (Sicilian dance resembling the pastorale, set to a slow and graceful melody in 12-8 or 6-8 measure)
sicle: shekel (weight)
sida: acronym of syndrome d'immunodéficience acquise; AIDS
side-car: sidecar
sidéen: AIDS
sidéen: an individual who has AIDS
sidéral: sidereal
sidéralement: sidereally
sidérant: baffling, flummoxing
sidération: consternation; bafflement
sidérer: to dumbfound, flummox; to consternate
sidérite: siderite (iron(II) carbonate); siderite (an iron meteorite)
sidérolithique: siderolithic
sidérophile: siderophilic
sidérophile: siderophile
sidérophore: siderophore
sidérose: siderosis
sidéroxylon: sideroxylon
sidérurgie: ironworking
sidérurgique: steel (relating to steelworks or steelworkers)
sidérurgiste: steelworker
sidéré: flabbergasted
sidérémie: sideremia
siemens: siemens