"poor dad" is correct and can be used in written English.
You can use it to show sympathy for a father in a difficult situation. For example, "My poor dad had to work two jobs to make ends meet."
3 126 RICH DAD, POOR DAD, by Robert T. Kiyosaki with Sharon L. Lechter.
Both Mr. Pendleton and Barbara Harris were discovered in "Oh Dad, Poor Dad," which also marked Jerome Robbins's nonmusical directorial debut.
Poor Dad, Phoebe thought.
And that was my poor Dad, apologising".
My poor dad, me mam, my three brothers and sisters.
This is the time of year when the UK's retail giants launch their blockbuster television ads and this year has been no exception, with a comedy bouncing dog, Mrs Claus and a time-poor dad.
In his first book, Rich Dad Poor Dad, Robert tells how he abandoned his dad's values of education and hard work and became an entrepreneur.
Reading that book made me understand my rich dad's lessons and the need to become financially educated... and led me to write 'Rich Dad Poor Dad.'".
"Being a product of two strong dads allowed me the luxury of observing the effects different thoughts have on one's life," Robert Kiyosaki writes in the personal finance classic, "Rich Dad Poor Dad".
