This is the 627th most frequent Lithuanian word.
šiam
"Šiam" means "to this" or "for this" in English.
Šiam - indicates the specific recipient ('žmogui' - person) of gratitude in dative case.
Aš dėkoju šiam žmogui už pagalbą.
I thank this person for the help.
Šiam - here, it specifies the goal ('tikslui') being referred to in the dative case.
Šiam tikslui pasiekti reikia daug pastangų.
Achieving this goal requires a lot of effort.
Šiam - used as a demonstrative pronoun meaning 'this,' referring to 'kiemui' (yard) in dative case, showing the target of the action.