Proto-IE: *k'[ē]w-, *k'wā-
Meaning: to swell, to to spread out, to be strong, etc.
Old Indian: śváyati `to swell, grow', śuná- n. `growth, success, welfare', śávas- n. `strength, power, might', śūna- `swollen, grown'; śū́ra- `strong, powerful, valiant; m. hero'; śotha- m. `swelling'; śvātrá- `invigorating, strengthening, strong', n. `strengthening food or drink'; śáśvant- `continuous, endless, numerous, frequent'
Avestan: sūra- `stark, gewaltig'; spā(y)- `aufschwellen'
Old Greek: küéō, sp. kǘō, aor. ékǖsa, kǖ́sasthai̯ `schwanger sein, werden', kǘos n. `Leibesfrucht, Fötus, Embryo', éŋküo- `schwanger', á-kǖro- `ohne Rechtskraft, ungültig', kǖ́rio-s m. `Herr, Herrscher, Besitzer' || dor., ark., Pind., Sol. etc. aor. pā́sasthai̯, pf. pépamai̯ `besitzen, erwerben', ark., arg., kret. pā̂ma, pl. böot. ta ppamata n. `Besitz'; pátores = ktḗtores Phot., pātḗr `Besutzer'
Latin: inciēns, -entis `trächtig'
Celtic: Gaul Kauaros, Cavarillus, Cymr cawr, Corn caur `Riese'
Russ. meaning: пухнуть, разрастаться, иметь силу etc.
References: WP I 365 f
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