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.

quadruplex

adjective, noun, verb

Forms quadruplexes quadruplexing quadruplexed

adjective Having four components.
adjective Of or relating to a system in telegraphy by which four messages (two in each direction) can be sent on one wire simultaneously.
adjective Of or relating to an early videotape format with four magnetic record/reproduce heads mounted on a headwheel spinning transversely across the tape.
noun (countable) A quadruplex system.
verb (transitive) To make quadruplex.

Synonyms

From Latin quadruplex (“fourfold, quadruple”), from quattuor (“four”) + plico (“fold”). By surface analysis, quadru- + -plex.

Etymology [L., from quattuor four + plicare to fold.]

Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “quadruplex”, CC BY-SA 4.0. Details