Similar words
necio
necio also implies stubbornness; insensato is more about lacking good judgment or being reckless — both mean "foolish."
Similar in other languages
Portuguese
insensato
insensato is the Portuguese word for the same thing — both mean "foolish."
Portuguese
tolo
tolo is the Portuguese word for the same thing — both mean "foolish."
Practice
1 What does insensato mean?
foolish
2 Fill the gap: Es un hombre ___.
Full sentence: Es un hombre insensato. (He's a foolish man.)
3 Which fingerprint chart matches insensato?
insensato: neutral register, academic frequency, general domain, neutral connotation.