am yisrael chai–
“TUff sTUff“
?
Actually, the “Tuesday” ones that you got were a lot tougher.
chocandpatience–
“Is that it?“
‘fraid not.
==========================
OK, more hints.
If these don’t help, I’ll b”n post the solution tomorrow.
The next group of words also meet the criterion of the three “in” words above:
Also
Rabies
Serial
Regalia
Big mule (yes, this appears to be two words)
Like a Schoolmaster in The Classroom, your wisdom will become clear to all when you discover the common property for the above words.