The phrase "a stranger thought" is correct and usable in written English.
It can be used to express a thought or opinion that someone who is not familiar with a person or situation has.
Example: "As she walked through the crowded market, a stranger thought she looked lost and offered to help her find her way."
Alternatives: "an outsider's perspective" or "a passerby's opinion".
Leonardo himself was not a stranger to such thoughts, writing, in one of the notebooks, "Intellectual passion drives out sensuality".
Thinking about having a stranger was not a pleasant thought.
A stranger glimpse into the thoughts behind the art is found in the recently released DVD of an hour-long 1964 TV interview of Lewis by David Susskind.
We got into one of those conversations that 19-year-olds can get into — and ended up having what I feel like was my very first real, true, superhonest conversation with a stranger, where I revealed thoughts and feelings about myself and dreams that I had.
Since Jan rented out their home in the past, she is over the slightly squeamish thought of a stranger snuggling up in her sheets.
So she does what she is able, caring for him at home because, she says, clearly loving, she can't bear the thought of a stranger "wiping his bottom".
If you can get over the thought of a stranger entering your garage, think of the benefits—no longer would packages sit on the front step all day while you're at work, exposed to the elements and sticky fingers.
Or, if you like the thought of a stranger joining your gym just to watch you sweat, feel free to carry on as you are.
You can join Susan and Darren at a family party or share your thoughts with a stranger in Ontroerend Goed's Internal, a hit at last year's Edinburgh Fringe.
The act of revealing her most sacred thoughts to a stranger, who also happened to be a convicted murderer and Mafia boss, never spooked Mrs. Howard, she said.
