This is the 201st most frequent Estonian word.
suutnud
"Been able to."
In this case, 'suutnud' reflects a general inability to accomplish tasks due to tiredness.
Kuna ta on väsinud, pole ta täna midagi suutnud teha.
Because he is tired, he hasn't been able to do anything today.
Here, 'suutnud' shows an inability or lack of success in the past attempt to convince someone.
Ma pole suutnud teda veenda oma plaanides.
I have not been able to convince him about my plans.
In this sentence, 'suutnud' is used in its perfect form, indicating that the person has successfully achieved the ability to complete the work.