251. 黯淡 (àndàn) - dim, dull
252. 平整 (píngzhěng) - flat, smooth
253. 锋利 (fēnglì) - sharp, keen
254. 钝 (dùn) - blunt, dull
255. 严格 (yángé) - strict, rigorous
256. 宽松 (kuānsōng) - loose, relaxed
257. 紧密 (jǐnmì) - close, tight
258. 松散 (sōngsǎn) - loose, lax
259. 清晰 (qīngxī) - clear, distinct
260. 模糊 (móhu) - vague, blurry
261. 强大 (qiángdà) - strong, powerful
262. 脆弱 (cuìruò) - fragile, delicate
263. 坚固 (jiāngù) - solid, sturdy
264. 虚弱 (xūruò) - weak, feeble
265. 聪明 (cōngmíng) - intelligent, clever
266. 愚蠢 (yúchǔn) - foolish, stupid
267. 机敏 (jīmǐn) - quick-witted, agile
268. 迟钝 (chídùn) - slow, dull
269. 和谐 (héxié) - harmonious, peaceful
270. 不和谐 (bùhéxié) - disharmonious, discordant
271. 高兴 (gāoxìng) - happy, delighted
272. 伤心 (shāngxīn) - sad, heartbroken
273. 紧张 (jǐnzhāng) - nervous, tense
274. 放松 (fàngsōng) - relaxed, relieved
275. 自信 (zìxìn) - confident, self-assured
276. 不安 (bù'ān) - uneasy, restless
277. 和平 (hépíng) - peaceful, tranquil
278. 冲突 (chōngtū) - conflicting, contentious
279. 活跃 (huóyuè) - active, energetic
280. 安静 (ānjìng) - quiet, peaceful
281. 喧闹 (xuānnào) - noisy, bustling
282. 热情 (rèqíng) - enthusiastic, passionate
283. 冷漠 (lěngmò) - indifferent, apathetic
284. 真诚 (zhēnchéng) - sincere, genuine
285. 虚伪 (xūwěi) - hypocritical, insincere
286. 开心 (kāixīn) - happy, joyful
287. 难过 (nánguò) - sad, sorrowful
288. 兴奋 (xīngfèn) - excited, thrilled
289. 疲倦 (píjuàn) - tired, weary
290. 平凡 (píngfán) - ordinary, plain
291. 出色 (chūsè) - excellent, outstanding
292. 自豪 (zìháo) - proud, proud
293. 卑微 (bēiwēi) - humble, insignificant
294. 宏伟 (hóngwěi) - grand, magnificent
295. 狭窄 (xiázhǎi) - narrow, tight
296. 宽敞 (kuānchǎng) - spacious, roomy
297. 满意 (mǎnyì) - satisfied, pleased
298. 失望 (shīwàng) - disappointed, disillusioned
299. 烦恼 (fánnǎo) - annoyed, troubled
300. 轻快 (qīngkuài) - light, brisk
These adjectives will help you describe various qualities, feelings, and characteristics in Chinese.