Supported coverage
Language data lang-2026.11.09-b. Every family below is implemented in the checker and not yet specialist-reviewed. A family is only advertised once it is reviewed and has approved sample packs.
| Family | Spellings | Status | Sample pack |
|---|---|---|---|
| Single consonants One letter, one consonant sound (b, c, d …), plus x and qu. | b, c, d, f, g, h, j, k, l, m, n, p, r, s, t, v, w, x, y, z, qu, c, g, n, t | implemented · specialist review pending | none |
| Double consonants ff, ll, ss, zz and other doubled letters that spell one sound. | ff, ll, ss, zz, bb, dd, gg, mm, nn, pp, rr, tt | implemented · specialist review pending | none |
| Consonant digraphs Two letters, one sound: sh, ch, th, wh, ck, ng, ph, tch, dge. | sh, ch, th, th, wh, ck, ng, ph, tch, dge, sc, ps, ch, ci, tur | implemented · specialist review pending | sample-digraphs-pond (agent-authored) |
| Glued / welded sounds Letter groups often taught as units: -nk, -all. | nk, all | implemented · specialist review pending | none |
| Short vowels a, e, i, o, u in closed syllables. | a, e, i, o, u | implemented · specialist review pending | sample-cvc-pets (agent-authored) |
| Silent-e (VCe) a_e, i_e, o_e, u_e, e_e. | a_e, i_e, o_e, u_e, e_e | implemented · specialist review pending | sample-silent-e-kite (agent-authored) |
| Vowel teams ai, ay, ee, ea, oa, ow, oo, ou, igh, oi, oy, au, aw, ew, ue, ie, ey. | ai, ay, ee, ea, ea, oa, oe, ow, ow, ou, ou, oo, oo, igh, oi, oy, au, aw, ew, ue, ie, ie, ey, ei, iew | implemented · specialist review pending | none |
| R-controlled vowels ar, or, er, ir, ur, are, air, ear. | ar, or, er, ir, ur, are, air, ure, ear, ar, ar | implemented · specialist review pending | none |
| Other vowel spellings Open-syllable long vowels (he, go, my), final y, s saying /z/, o saying /u/. | s, e, o, i, a, u, y, y, o, a, i, e, y, u, o, i, e | implemented · not in initial coverage | none |
| Unstressed vowels (schwa) Any vowel letter saying /ə/ in an unstressed syllable. Off by default. | a, e, i, o, u | implemented · not in initial coverage | none |
| Silent letters kn, wr, mb, gn and the generic silent final e. | kn, wr, mb, gn, e | implemented · not in initial coverage | none |
| Suffixes -s, -es, -ed, -ing attached to a known stem. | -s, -s, -es, -ed, -ed, -ed, -ing | implemented · specialist review pending | none |
| Word structure Consonant blends and multisyllable words. Not spellings; structural skills the validator infers. | (CC-), (-CC), (two+ syllables), (n't, 's) | implemented · specialist review pending | none |
| Prefixes Word beginnings such as un-, re-, tele- and micro-. | un, re, dis, mis, pre, non, over, under, auto, tele, micro, bi, tri, sub, super, inter, anti, semi, trans, multi, fore, counter, circum | implemented · not in initial coverage | none |
| Greek and Latin word parts Spelling and sound chunks such as graph, phon, struct and duct. | graph, phon, scope, rupt, struct, duct | implemented · not in initial coverage | none |
| Advanced endings Longer endings such as -tion, -able, -ology and -cious. | ment, ous, ious, eous, able, ible, tion, sion, cian, ture, ology, ence, ance, ive, ative, itive, ery, ary, ory, al, ial, ual, ent, ant, ify, ise, ize, cious, tious, ical, ular, ward, wise, esque, ette, le | implemented · not in initial coverage | none |
Not supported yet: multisyllabic morphology beyond -s/-es/-ed/-ing, schwa-dependent words, most contractions, hyphenated words, heteronyms, and words whose common pronunciation is not covered by a listed spelling (for example put, what, word, does). Those words are flagged, never silently accepted.
