Movement is sometimes an adequate substitute for action.
Nevertheless, it is still open to question whether these arrangements are an adequate substitute for parliamentary scrutiny.
Then, a few days later, finding no adequate substitute, she relented.
If you don't have any on hand, light corn syrup or a very mild honey make adequate substitutes.
By the time the Portuguese trade passed its peak in the 1760s, a more than adequate substitute had developed, with special rapidity after 1740.
Cubby has been an adequate substitute to represent the team to the public.
Simply resting is not an adequate substitute for sleep.
The presence of an alternative on the market does not necessarily mean that it is an adequate substitute.
"My woman is not your own, yet may she perhaps prove to be something of an adequate temporary substitute."
This proved to be an adequate substitute for short duration clocks.