有效

effective / in effect / valid

to have; there is / (bound form) having; with; -ful; -ed; -al (as in 有意[you3 yi4] intentional)

variant of 傚|效[xiao4]

variant of 效[xiao4] / to imitate

variant of 效[xiao4]

effect / efficacy / to imitate

to imitate (variant of 效[xiao4])

period of validity / sell-by date

to be effective (idiom)

validity

payload

cost-effective

within the period of validity / before the sell-by date

inefficient

effective action