How effective is...?

to have / produce (an) effect
1. a considerable / significant / powerful effect
2. little / much effect
3. no effect whatsoever
4. to have their effect
to be / prove (in)effective
1. Syn.: fruitful / fruitless
2. highly / particularly effective
3. equally effective
4. largely / relatively ineffective
5. nowhere near as effective as
Idioms for ineffective
1. a mug' s game
  1. Ex. Forecasting a wannabe PM's likely legacy is a mug's game.
2. a fool's errand
  1. Ex. Trying to attract attention in this way is a fool's errand
3. go adrift
  1. Ex. Something seems to have gone adrift in our calculations.
Idioms for effective
1. to work wonders
  1. Ex. A good night’s sleep can work wonders for mind and body
2. to work like a charm
  1. Ex, The new sales approach worked like a charm
3. to work a treat
  1. Ex. The new tactic worked a treat
4. to do the trick
  1. Sometimes it can do the trick
5. I'd give it a go / It's worth a go
6. I'd go for that

Resource summary

	Created by Oxana Kostina over 9 years ago