Concrete arguments

[SkiIucK]

Hello,

Can we use the term 'concrete' to express that something is as stiff as concrete, e.g. 'He had concrete arguments and no one could refute them.'?

Thanks

[Mister Micawber]

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'Concrete' in your example sentence is good and has another (though related) meaning: 'pertaining to or concerned with realities or actual instances rather than abstractions; particular (opposed to general): concrete ideas.' It does not and would not mean 'stiff' or 'inflexible'.
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Native English teacher at Mister Micawber's