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.

seniority

UK /siːnɪˈɒɹɪti/ · US /sinˈjɔɹɪti/ noun

Forms seniorities

noun A measure of the amount of time a person has been a member of an organization, as compared to other members, and with an eye towards awarding privileges to those who have been members longer. “It's an old-fashioned company, with parking spaces and other perks doled out on the basis of seniority.”

Synonyms

From Middle English senyoryte, from Medieval Latin senioritas, from Latin senior (“elder”).

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

Sanskrit dictionary entries whose meaning includes “seniority” (best matches first).

अनुज्येष्ठ anu-jyeṣṭha next eldest; ( am ), ind. after the eldest, according to seniority.
ज्यैष्ठ्य jyaiṣṭhya pre-eminence, sovereignty; precedence, priority of birth, primogeniture, seniority.
यथावृद्धम् yathā-vṛddham according to age or seniority.
ज्येष्ठतस् jyeṣṭha-tas according to seniority, (reckoning) from the eldest.
ज्येष्ठता jyeṣṭha-tā or jyeṣṭha-tva, am, n. superiority; primogeniture, seniority.
ज्येष्ठवृत्ति jyeṣṭha-vṛtti behaving like the first-born or eldest brother; ( is ), f. the duties of seniority.
यथाज्येष्ठम् yathājyeṣṭham according to the oldest, by seniority, according to rank, from the oldest to the youngest.