1‘one bullet struck the car, narrowly missing him’
only just, just, barely, scarcely, hardly, by a hair's breadth, by a very small margin, by the narrowest of margins, by the skin of one's teeth, by a nose
informal by a whisker
2‘she looked at me narrowly’
closely, carefully, searchingly, scrutinizingly, attentively
meticulously, scrupulously, painstakingly
We take a look at several popular, though confusing, punctuation marks.