Similar words
laborioso
laborioso is more formal or literary; trabalhador is the everyday word, which also means "worker" as a noun — both mean "hard-working."
Similar in other languages
Spanish
esforzado
esforzado is the Spanish word for the same thing — both mean "hard-working."
Practice
1 What does trabalhador mean?
hard-working
2 Fill the gap: É um homem ___.
Full sentence: É um homem trabalhador. (He is a hard-working man.)
3 Which fingerprint chart matches trabalhador?
trabalhador: neutral register, core frequency, general domain, neutral connotation.