What is a synonym for “careless”?

Here is the question :

WHAT IS A SYNONYM FOR “CARELESS”?

Here is the option for the question :

Smithereens
Ignoramus
Slipshod
Calamity

The Answer:

And, the answer for the the question is :

Slipshod

Explanation:

[STC0010927]. The word “slipshod” can be defined as “careless” or “slovenly,” depending on the context. Because “shod” is the past tense of the verb “shoe,” it was initially used in the 1500s to refer to the practice of wearing shoes or slippers that were too loose. Soon, the term’slipshod’ came to indicate not only shoes that were loose but also shoes that were coming apart, and by the early 19th century, it was used as a synonym for the word’shabby.’ In the year 1818, Sir Walter Scott Key referred to certain library books as ‘the half-bound and slip-shod volumes.’ Over time, its connotation with slovenliness morphed into the carelessness that characterizes modern usage of the term.