1 (of an object) easily broken or damaged.
1.1 Easily destroyed or threatened.
1.2 (of a person) not strong or sturdy; delicate and vulnerable.
Late 15th century (in the sense ‘morally weak’): from Latin fragilis, from frangere ‘to break’. The sense ‘liable to break’ dates from the mid 16th century.
Tom’s fragile ego kept him from accepting life’s most interesting challenges.
[At least once, fragile has been misinterpreted as an Italian word.]