Sed search for a string containing "text" but not containing "."?

Question

bash

Hello,
There is a book.txt file containing records of the type:
text
word.text
The task is to delete only the line in the file that contains text, not text and word.text.
Can sed handle this without GNU? This example removes text and word.text.
sed -i "/text =/d" /book.txt

Answer 1

Probably so:
sed -i "/^text$/d" /book.txt