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.

drop out

verb

Forms drops out dropping out dropped out

verb (idiomatic) To leave (school, a race, etc.) prematurely and voluntarily. “Nothing went well in high school, so he dropped out.”
verb To opt out of conventional society.
verb (of sound, electronic signal, etc.) To be lost or momentarily interrupted. “I can't make phone calls because the line keeps dropping out.”
verb Used other than figuratively or idiomatically: see drop, out.
verb (intransitive, Of a trapdoor or similar) To give way under someone. “The board he was walking on dropped out.”
verb (intransitive, Of the ground, floor, snow, etc., or figuratively, a worldview or foundation) To cause someone to slip and/or fall down. “The ground dropped out from under him.”
verb (transitive, slang) To dismiss, break up with or abandon (someone).

Synonyms

Sources: Wiktionary · WordNet 3.0 — from the Wiktionary entry “drop out”, CC BY-SA 4.0. Details