Indeclinable
"Indeclinable" in a Sentence (2 examples)
My last name is indeclinable.
He'd planned to work a double shift Friday night, but Gladys Silverman's indeclinable invitation threw a hefty wrench into David's plans.
My last name is indeclinable.
He'd planned to work a double shift Friday night, but Gladys Silverman's indeclinable invitation threw a hefty wrench into David's plans.