効 - merit, efficacy, efficiency

invalid; void; ineffective; unavailable

immediate effect; instant effect

valid; effective

coming into effect

to be effective; to take effect; to be good (for)

effect; virtue; efficacy; impression

use; utility; effect; benefit

practical effect; efficacy; efficiency

efficiency

opposite effect; adverse effect; backfiring

effect; effectiveness; efficacy; result

effect; effectiveness; efficacy; virtue; benefit