Note 1. The law for the transition of i to ai before h and r (so-calld breaking or refraction) is almost without exception, and equally concerns the Germanic i in general and the Gothic is ([§ 10]) in particular. The i before h, r, is retaind only in the following words: nih, 'neque' (= ni uh), hiri, (cum) here!; du. hirjats, pl. hirjiþ (219); and in the isolated forms: sihu, victory (cp. [§ 106], n. 1), þarihis (a probably corrupt form in Mt. IX, 16), adj. in gen. sg., not fuld (said of cloth). Cp. IF. 4, 334 et seq.
Note 2. Not every ai before h, r is aí, but may also be the old difthong; e. g., þáih (prt. of þeihan, like ráis, prt. of reisan, but pl. þaíhum, like risum, [§ 30]), áih, I hav; áihts, property; háihs, one-eyd; fáih, deceit (Beitr., 12, 397); áir, erly (OHG. êr); sáir (OHG. sêr), sorrow; áirus, messenger. Whether ai has the value of ái or aí can in most cases only be inferd from the remaining Germanic languages.
Note 3. In Latin orthografy aí is exprest by e; e. g., Ermanaricus = Goth. *Aírmanareiks, Ermenberga = Goth. *Aírminbaírga. Cp. Wrede, 'Ostg.', 162.
Note 4. ai is to be regarded as a difthong (ái) in baitrs, bitter; jains, yon, that (and its derivations), while formerly, according to OHG. bittar, jenêr, it was thought to be short (aí). Cp. Holtzmann, 'Altd. Gr.', p. 11 et seq.; Brgm., I, 392; Bezzenb. Beitr., 16, 156.—Scherer (Zur Gesch. d. dtsch. Sprache) presumed short aí also in the 3d pers. sg. prs. opt. (like nimai) and in several forms of the strong inflection of adjs. (nom. pl. m. blindai, gen. sg. f. blindaizôs, gen. pl. blindaizê, blindaizô). Hirt (Beitr., 18, 284 et seq.) goes stil farther in this direction.—Cp. also [§ 22], n. 3.
§ [21]. II. The old Difthong ai. By far the greater number of the Gothic ais express a difthongal sound which is equivalent to OHG. ei or ê (ahd. gr., [§§ 43]. [44]), OS. ê, ON. ei. The Goths of Wulfila's time indeed seem to hav stil pronounced this ai as a + i.—For the difthong ai we employ Grimm's sign ái whenever it is likely to be confused with aí. Exampls of difthongal ai (before h, r, cp. [§ 20], n. 2): The prts. sg. of the I. ablaut-series ([§ 30]),—bait, I bit (inf. beitan); staig, I mounted (inf. steigan); etc.; wait ([§ 197]); ains, one; hlaifs, (loaf of) bred; staiga, path; laisjan, to teach; —haitan, to be calld; maitan, to cut; skaidan, to separate; aiws, time; —hails, hale, sound; dails, deal.
ai appears also in inflectional syllabls of the III. Weak Conjugation ([§ 191]): habais, habaida, etc.; in the prs. opt.: nimais, etc.; anstais, gen. sg. of the i-decl.; in the str. adjs.: blindaizôs, etc. ([§ 123]); —final: gibai, anstai, dat. sg.: nimai, 3 prs. sg. opt.; blindai, dat. sg. f. and nom. pl. m. of the str. adj.; —monosyllabls: þai, nom. pl., these; twai, 2; bai, both; jai, yes; sai, behold!; wai, woe!
Note 1. Latin writers express the Gothic ai predominantly by ai, ei: Dagalaiphus, Gaina, Radagaisus, Gisaleicus (cp. Dietrich, 'Ausspr.'), eils in a Lt. epigram (Zs. fda., 1, 379). On the Bukarest rune-ring (cp. [§ 221], n. 3) stands hailag (Paul's 'Grundriss', I, 411).—Concerning the difthongal pronunciation of the Gothic ai, cp. especially Wrede, 'Wand.', 95 et seq.; about monofthongization in East Goth., s. Wrede, 'Ostg.', 165.
Note 2. ai and aj interchange in wai, woe!; wai-dêdja, evil-doer, and waja-mêrjan, to blasfeme; in aiws, time, and ajukdûþs, eternity.
§ [22]. Many scholars hold that also the ai in the reduplicating ablaut vs. ([§ 182]) saian and waian is difthongal. This ai, however, stands etymologically for Gothic ê, and its OHG. equivalent is â (not ei): OHG. sâen, wâen (cp. ahd. gr., § 359, n. 3.) The difthong ai before a vowel would becum aj; hense, *sajan, *wajan. Here ai perhaps has the sound of long æ, i. e. open e representing close e (ê) when followd by a vowel; thus, saian, waian, for sêan, wêan.