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.

declension

/dɪˈklɛn.ʃən/ noun

Forms declensions

noun A falling off, decay or descent.
noun (grammar) The act of declining a word; the act of listing the inflections of a noun, pronoun or adjective in order.
noun (grammar) The product of that act; a list of declined forms. “a page full of declensions”
noun (grammar) A way of categorizing nouns, pronouns, or adjectives according to the inflections they receive. “In Latin, 'amicus' belongs to the second declension. Most second-declension nouns end in '-i' in the genitive singular and '-um' in the accusative singular.”

Synonyms

From late Middle English declinson, from Middle French declinaison (Modern French: déclinaison), from Latin dēclīnātiō. Doublet of declination.

Etymology [Apparently corrupted fr. F. déclinaison, fr. L. declinatio, fr. declinare. See Decline, and cf. Declination.]

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

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

अमु amu a pronominal base, used in the declension of the pronom. adas.
क ka interrog. pron., who? which? what? In its declension ka follows the pronoun tad (Gram. 223) except in nom. a…
य ya the actual base of the relative pronoun in declension, though yad, q.v., is used as the base in comps. and i…
विभक्ति vi-bhakti a division, partition; part, portion, share of inheritance, etc.; (in grammar) inflection of nouns, declensi…
रूप rūpa any outward appearance or phenomenon, form, figure, shape, ( rūpaṃ kṛ, to assume a form); any object of visi…
सर्व sarva (in Uṇādi-s. 1. 153. said to be fr. rt. sṛ, ‘to go,’ ‘pervade,’ this rt. having also, according to some, the…
एक eka follows the declension of pronominals (see Gram. 200, 237), and may be declined in the plural. Sometimes eka…
मासपूर्व māsa-pūrva a month before, a month earlier, (in this sense pūrva has not the pronominal declension.)