お粗末な の訳語→ clumsy crude
かすかな の訳語→ allusive distant evanescent faint faintly gentle half lightly little low meager slightly small soft tender thready tremulous vaguely vanish wan wee wispy
かぼそい の訳語→ papery slow thin tiny weak
陳腐な の訳語→ banal corny dreary
薄弱な の訳語→ flaccid
頼りない の訳語→ forlorn vulnerable
feebleness