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.

lousy

/ˈlaʊ.zi/ adjective

Forms lousier lousiest lowsy lowsie lousey

adjective Insufficient and less than expected of a good thing. “I worked here all summer and all I got was this lousy T-shirt.”
adjective Remarkably bad; of poor quality. “No offense, but his cooking is lousy.”
adjective Dirty or untidy. “I cleaned the lousy garage.”
adjective Underhanded; mean; contemptible. “I've had enough of lousy backstabbing at this place.”
adjective (colloquial) Unwell; under the weather. “I caught a cold and I've been feeling lousy all week.”
adjective Infested with lice.
adjective (colloquial, usually with with) Filled or packed (with something, usually bad). “The place was lousy with students.”

Synonyms

From Middle English lousy, lowsy, lousi, equivalent to louse + -y.

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