The most common and most likely answer to this crossword clue is the 6 letter word GLARED
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More clues leading to the result GLARED
Buddy explains!

The straight part
We know that "Looked fixedly" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case looked fixedly = glared.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does GLARED mean?
GLARED verb- To stare angrily.
- To shine brightly.
- To be bright and intense, or ostentatiously splendid.
- To shoot out, or emit, as a dazzling light.