Pronunciation guide: IPA symbols, stress and word endings

θ	thin	ð	this	ʃ	she	ʒ	measure
tʃ	church	dʒ	judge	ŋ	sing	j	yes

p b t d k g f v s z h m n l r w sound as in ordinary English spelling.

ˈ main stress, before the stressed syllable: /ˈwɔːtə/ water · ˌ lighter (secondary) stress: /ˌʌndəˈstænd/ understand
ː a long vowel · (r) an r said only in accents that pronounce it (most American, Scottish, Irish)

-s / -es (plurals; he/she form of verbs): /s/ after voiceless sounds (cats), /z/ after voiced (dogs), /ɪz/ after s, z, sh, ch, j sounds (buses, watches). Spelling: -es after s, x, z, ch, sh; consonant + y → -ies (city → cities).
-ed (past): /t/ after voiceless sounds (walked), /d/ after voiced (played), /ɪd/ after t or d (wanted). Spelling: love → loved, stop → stopped, carry → carried.
-ing: make → making, run → running, see → seeing.
Irregular: go, went, gone · be, was, been · see, saw, seen · man → men · child → children · mouse → mice.
Older (King James) forms: -eth = -s (he loveth = he loves) · -est with “thou” (thou lovest) · spake = spoke.

unteach

verb

Forms unteaches unteaching untaught

verb (transitive) To cause (someone) to unlearn; to make (someone) forget something they have been taught, or recognize it as erroneous, etc.
verb (transitive) To cause (something previously learned) to be forgotten, or recognized as an error, etc.

Etymology

From un- + teach.

verb To cause to forget, or to lose from memory, or to disbelieve what has been taught.
verb To cause to be forgotten; as, to unteach what has been learned.

Etymology [1st pref. un- + teach.]

Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “unteach”, CC BY-SA 4.0. Details