There is no verb form for the adjective able.
The verb is able; the complete verb is 'are able to know'.
Poder is the un-conjugated verb for "to be able". So that would most likely be the best verb in this case.
able is not a verb
Enable is a verb that is close in meaning to able. It can be used in different ways, but one of the meanings is "to make able."
In the past, we say - I was able to do it, or in the negative, I couldn't do it/I wasn't able to do it.
ably
The word "can" is a verb. The infinitive is "to be able to", it is a modal verb.
The verb in the sentence is: can walk.The word 'can' is functioning as an auxiliary verb (helper verb) that modifies the main verb 'walk' as 'able to'.
Able :P
No, the suffix -able is a suffix.
yes, a verb is an action word and your able to do it ex.sally triggered the alarm
-able meaning capable