[Grammar] lowering / decreased

[Ashiuhto]

Are the following sentences acceptable?

1. The average age of criminals is lowering.
2. The average age of criminals has decreased.
3. Average age of criminals is falling.
4. The crime age is getting lower and lower.
5. Juvenile delinquency is getting lower by age!
6. Age lowered in juvenile delinquency
7. Crime commitment is getting lower by age!
8. Age lowered in crime commitment!

 

[SoothingDave]

2 is the only correct one. 3 would work as a headline.

"The average age of criminals is decreasing." is another possibility.

 

[emsr2d2]

Are the following sentences acceptable?

1. The average age of criminals is lowering. No, we don't use "lowering" like this. Try "is getting lower".
2. The average age of criminals has decreased. Yes.
3. The average age of criminals is falling. With the addition of the definite article, yes.
4. The crime age is getting lower and lower. No. The "crime age" doesn't work.
5. Juvenile delinquency is getting lower by age! No, just not natural. Juvenile delinquency doesn't have an age.
6. Age lowered in juvenile delinquency. As a newspaper headline, the construction might work but, again, not with "lowered".
7. Crime commitment is getting lower by age! No. The use of "commitment" is not right here. The word to use connected to crime would be "commission" but even with that, the sentence doesn't work.
8. Age lowered in crime commitment! No. Same reasons as 7) and 5).

The only one here which is natural and means what I think you want it to mean is 2, which could be used in the present continuous as well.

The average age of criminals has decreased.
The average age of criminals is decreasing.