1. (

• significant ,
• substantial

) of considerable importance, size, or worth; "won by a substantial margin" ;

2. (

• substantial ,
• substantive

) of or relating to the real nature or essential elements of something; "a substantial argument" ;

3. (

• substantial ,
• real ,
• material ,

) having substance or capable of being treated as fact; not imaginary; "the substantial world"; "a mere dream, neither substantial nor practical"; "The wind was violent and felt substantial enough to lean against" ;

4. (

• hearty ,
• satisfying ,
• solid ,
• square ,
• substantial

) providing abundant nourishment; "a hearty meal"; "good solid food"; "ate a substantial breakfast"; "four square meals a day" ;

5. (

• solid ,
• strong ,
• substantial

) of good quality and condition; solidly built; "a solid foundation"; "several substantial timber buildings" ;

6. (

• affluent ,
• flush ,
• loaded ,
• moneyed ,
• wealthy ,
• substantial

) having an abundant supply of money or possessions of value; "an affluent banker"; "a speculator flush with cash"; "not merely rich but loaded"; "moneyed aristocrats"; "wealthy corporations"; "a substantial family" ;