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§ 95 Ar. su̯- remained in Pr. Kelt., and gives s in Ir., chw̯&#8209;, hw̯- in W., § 26 vi. Thus Ar. *s̯uesōr > Ir. siur, W. chw̯aer ‘sister’ § 75 vii (2).—Ar. *su̯id&#8209;t- > *su̯itˢt- > W. chw̯ŷs ‘sweat’: Skr. svídyati ‘sweats’: Lat. sūdor < *su̯oid&#8209;: E. sweat.—Ar. *su̯ek̑s > W. chw̯ech, Ir. sē: Gk. ῾ϝέξ, § 101 ii (2).—Ar. *su̯ek̑(u)r- > W. chw̯egrwn ‘father-in-law’, chw̯egr ‘mother-in-law’: Lat. socer, socrus, Gk. ἑκυρός, ἑκυρᾱ́, Skr. s̑vás̑uraḥ, s̑vas̑rū́ḥ.—W. chwi ‘you’ < *s&#8209;u̯es: Lat. vōs § 159 iv. Before ɔ from ā it was unrounded to h, as in hawdd < *su̯ād- § 148 i (6).

Medial &#8209;u̯s- > h$u̯$ > W. w̯ § 76 ii (3).

i. Ar. sm&#8209;, sn&#8209;, sl&#8209;, sr- remained in Pr. Kelt, and appear in Ir. unchanged, in W. as m&#8209;, n&#8209;, ll&#8209;, rh&#8209;. Thus, sm&#8209;: Ir. smēr ‘blackberry’, W. mwyar ‘blackberries’ § 75 vi (2).—Ir. smir gen. smera ‘marrow’, W. mêr id.: Gk. σμυρίζω, μυρίζω ‘I anoint’, E. smear, Lith. smarsas ‘fat’.—sn&#8209;: Ir. snechta, W. nyf ‘snow’: Lat. ninguit, O. H. G. snēo, E. snow § 92 iii.—Ir. snāim ‘I swim’, W. nawf ‘swimming’: Lat. nāre, Skr. snā́ti ‘bathes’.—Ar. √senē(i̯)- ‘thread’: Ir. snīim, W. nyddaf ‘I spin’, Ir. snāthat, W. nodwydd ‘needle’: Lat. nēre, E. snare, Skt. snā́yu ‘bowstring’.—sl&#8209;: Ir. slemun, W. llyfn ‘smooth’: Lat. lūbricus < *sloibricos, E. slip.—Ir. slūag, W. llu ‘retinue’: O. Bulg. sluga ‘servant’.—sr&#8209;: Ar. *sreu̯&#8209;: Ir. sruth ‘stream’, W. rhwd ‘dung-water’ (rhwd tomydd I.G. 238), rhewyn ‘gutter’: Lith. srutà ‘dung-water’, Gk. ῥυτός, ῥεῦμα, etc. § 58 vi, § 76 iv (1).—Ir. srōn ‘nose’ < *srokn&#8209;, W. rhoch ‘snore’ < *srokn- § 99 vi (3): Gk. ῥέγχω, ῥέγκω ‘I snore’, ῥόγχος ‘snoring’, ῥύγχος ‘pig’s snout’, § 97 v (3).

(1) Medial &#8209;sm&#8209;, &#8209;sn&#8209;, &#8209;sl&#8209;, &#8209;sr- probably remained in Pr. Kelt., but became &#8209;mm&#8209;, &#8209;nn&#8209;, &#8209;ll&#8209;, &#8209;rr- in both Ir. and W. (In W. &#8209;mm- is written &#8209;m-, and ll is now the voiceless ƚƚ,