'simply-regulated' originates from the combination of 'simply' and 'regulated'. 'Simply' comes from the Latin word 'simplus', meaning 'single' or 'plain', and 'regulated' comes from the Latin word 'regula', meaning 'rule'.

'simply-regulated' combines the straightforwardness of 'simply' with the control aspect of 'regulated', forming a modern English adjective.

Initially, 'simply' meant 'plainly' and 'regulated' meant 'controlled by rules'. Together, they evolved to mean 'controlled in a straightforward manner'.