adjective
able
AY-bul/ˈeɪbl/
Having the ability or opportunity to do something.
The older woman is able to juggle three balls confidently.

Etymology
Latin habilis meant “easily handled,” hence “fit for a purpose.” That shift from handiness to suitability leads to the modern sense of having the capacity or means to do something.
In context
if a student is unsure of an answer, they're able to ask a friend
More examples
- With the ramp, visitors are able to enter without using stairs.
- I'm able to meet tomorrow because my afternoon is free.
- We weren't able to fix the leak ourselves.