This is the 654th most frequent Lithuanian word.
neturėtų
"Neturėtų" means "should not" in English.
In this sentence, 'neturėtų' is used as a modal verb to indicate a suggestion or an obligation that he should not do something, namely forgetting his obligations.
Jis neturėtų pamiršti savo pareigų.
He should not forget his duties.
Here, 'neturėtume' conveys a recommendation or moral obligation directed at us as a group, emphasizing the importance of punctuality.
Mes neturėtume vėluoti į susitikimą.
We should not be late for the meeting.
In this context, 'neturėtum' suggests advice being given to you, implying that excessive worrying is not necessary or beneficial.