As adjectives the difference between unsuitable and lousy
is that unsuitable is not suitable; unfit; inappropriate while lousy is remarkably bad; of poor quality, dirty, or underhanded; mean, contemptible.
unsuitable
English
Adjective
(
en adjective)
Not suitable; unfit; inappropriate.
Antonyms
* suitable
Derived terms
* unsuitably
lousy
English
Adjective
(er)
Remarkably bad; of poor quality, dirty, or underhanded; mean, contemptible.
* No offense, but your cooking is lousy .
Infested with lice.
(colloquial) Filled or packed with something.
* The place was lousy with students .
* She's lousy with credit cards, goes shopping every day!
Usage notes
Prior to World War II, it was an offensive insult, implying filthiness. Now considered a mild or rather dated term.
Derived terms
* lousy evil
Related terms
* cootie, crab louse, crabs, louse, pubic louse