"Research shows owners who spoil their pets do not complain about behaviour problems more than ridged ones".
After puzzling a bit over what kind of a ridge the pet owners might have, I realized that the writer meant "rigid".
This made me think about a much more common spelling mistake; "priviledge(d)" for "privilege(d)".
How can you remember not to put a "d" in these words?
They both come from French, so if you remember that the consonant combo "dg" does not exist in French, that may help you. But only, of course, if you know French!
"Rigid" comes from the same Latin word meaning "be stiff" that gave us "rigor" (as in "rigor mortis") and "rigour" (strictness), and as you see, they have no "d". Perhaps a good mnemonic for "rigid" would be "oil rigs are rigid" -- we certainly hope they are!
"Privilege" comes from two Latin words: privus (private) and legis (law). A privilege is a "private law" -- one that applies to an individual only. Legis also turns up in "legislature" and "legislation" etc., which may help you, but only if you don't also spell those words with a "d"!
Personally, whenever I go to my ballet class or ride my bicycle or go for a walk, I think how privileged I am to have legs; I certainly never think it a privilege to have ledges!
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