ineffectual
英 [ɪnɪ'fektʃʊəl; -tjʊəl]
美[,ɪnɪ'fɛktʃuəl]
	    - adj. 无效的,不起作用的;徒劳无益的
 - n. 无用的人;无一技之长者
 
英英释意
- 1. not sufficient to produce a desired result;
 - "an ineffectual effort to block the legislation"
 
- 2. not producing an intended effect;
 - "an ineffective teacher"
 - "ineffective legislation"
 
- 3. producing no result or effect;
 - "a futile effort"
 - "the therapy was ineffectual"
 - "an otiose undertaking"
 - "an unavailing attempt"
 
- 4. lacking in power or forcefulness;
 - "an ineffectual ruler"
 - "like an unable phoenix in hot ashes"