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.

defensible

/dɪˈfɛn.sɪ.bəl/ adjective

adjective (of an installation, etc.) Capable of being defended against armed attack.
adjective (of an argument, etc.) Capable of being justified.

Synonyms

From Old French defensable, from Latin defensibilem. Equivalent to defense + -ible.

adjective Capable of being defended; as, a defensible city, or a defensible cause.
adjective Capable of offering defense. [Obs.] Shak.

Etymology [Cf. F. défensable, LL. defensabilis, defensibilis. See Defense, and cf. Defendable.]

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

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

रक्षणीय rakṣaṇīya to be guarded or preserved, to be protected; to be watched or guarded against, defensible.