1. (

• flimsy ,
• insubstantial

) lacking solidity or strength; "a flimsy table"; "flimsy construction"; "vinyl siding has become the standard-bearer for cheap, insubstantial construction" ;

2. (

• unconvincing ,
• flimsy ,

) not convincing; "a flimsy argument"; "as unconvincing as a forced smile" ;

3. (

• flimsy ,
• fragile ,
• slight ,
• tenuous ,
• thin ,

) lacking substance or significance; "slight evidence"; "a tenuous argument"; "a thin plot"; "a fragile claim to fame" ;