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134 rally as h&#8209;, sometimes as s&#8209;. Examples: Ir. samail ‘likeness’, W. hafal ‘like’ < *sₑmₑl&#8209;: Lat. similis, Gk. ὁμαλός, √sem- ‘one’.—Ir. sam, W. haf ‘summer’: O. H. G. sumar, E. summer, Skr. sámā ‘year’.—Ir. sen, W. hên ‘old’: Lat. senex, Gk. ἕνος, Skr. sána&#8209;ḥ ‘old’, Lith. sẽnas ‘old’.—W. had: Lat. satus § 63 vi (1).—W. hun ‘sleep’: Lat. somnus, Gk. ὕπνος, § 63 viii (1).—W. hynt ‘way’, Ir. sēt, § 65 iii.—W. hîr ‘long’, Ir. sīr: Lat. sērus, § 72.— — Ir. secht n&#8209;, W. saith ‘seven’: Lat. septem, Gk. ἑπτά, etc. < Ar. *septm̥ § 86 ii (1).—W. sīl ‘progeny, seed’, beside hīl < *sē&#8209;l&#8209;, √sē- § 63 vi (1).—W. serr, Ir. serr, § 86 i (5).—W. saer, Ir. sāer < *sapero&#8209;?: Lat. sapio.—W. sugnaf, Ir. sūgim ‘I suck’: Lat. sūcus, sūgo, O. E. sūgan, sūcan ‘suck’.

ii. Medially between vowels Ar. s remained after the separation of the P and Q divisions; and is found in Gaulish, as in Isarno&#8209;. In Ir. and W. it became h, and generally disappeared, except where it became initial by metathesis, as in W. haearn, though it is in some cases still written in Ml. W.; thus W. eog, Ml. W. ehawc, Ir. eo, gen. iach < Kelt. *esāk- < *esōk&#8209;, Lat. esox < Kelt. The reduction of vowel-flanked s gave rise to new diphthongs in Brit., which developed largely like original diphthongs; see § 75 i, ii, vi, vii, § 76 ii (3).