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.

impostor

UK /ɪmˈpɒstə/ · US /ɪmˈpɑstɚ/ noun

Forms impostors imposter impostour

Synonyms

Borrowed from Middle French imposteur, respelled in the Latin manner; ultimately from Latin impositor, agent form of Latin imponere (“to impose”).

noun One who imposes upon others; a person who assumes a character or title not his own, for the purpose of deception; a pretender. "The fraudulent impostor foul." Milton.

Etymology [L. impostor a deceiver, fr. imponere to impose upon, deceive. See Impone.]

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

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

मौष्टिक mauṣṭika a cheat, impostor, rogue, sharper.
कुयोगिन् ku-yogin a false devotee, an impostor, a hypocrite.
अनभिलक्षित an-abhilakṣita destitute of (masonic?) marks or symbols, an impostor.
शैलिक्य śailikya (etymology doubtful), an impostor, hypocrite, pretended devotee ( = sarvaliṅgin ).
सकैतव sa-kaitava having fraud, fraudulent; ( as ), m. a deceiver, cheat, impostor; ( am ), ind. fraudulently.
दम्भिन् dambhin acting deceitfully, hypocritical, wicked, proud; ( ī ), m. a hypocrite, a deceiver, an impostor.
प्रतारक pra-tāraka deceiving, deceitful, cheating, imposing upon, insidious, perfidious; a deceiver, cheat, impostor.
अलिङ्गिन् a-liṅgin an impostor, a pretended ascetic or student, one wearing the usual frontal marks, skin, staff, etc., without…