@packbat As noun, it implies masculinity to me. And, moderately so.

@packbat For me, it depends on context. In the use of "my fellow X" or as an outright nown, it implies a male gender. If used as part of a title, e.g. "Fellow of the X", it doesn't really imply a gender.

@packbat I perceive it as male-flavored but slightly less so than “dude”, which is itself debated in this regard.

@packbat to me, it does imply a masculine gender, but very weakly; less strongly than "guy" or "dude"--on a scale where 1=definitely male and 10=definitely female, I'd put "fellow" at a 4 or 4.5.

@packbat 100% male.

@packbat oh a fellow/fella is definitely male to me. This fellow here.

Maybe not super strong, but along the lines of dude, maybe even more than dude.

@packbat no, but fella does (def. male). "Fellow" has a grant paying their salary at a University. Fella's a guy.

@packbat As a noun, yes. As an adjective or title, no, but I'm also used to the language of academe and my temple uses "Fellowship" in an explicitly gender-neutral-coded way, so I have a specific set of contexts that drive me towards my answer. I suspect more people will think it's gender-coded than not, but I'd love to be surprised here.

@packbat to me, it does, but to a low degree.

@packbat
Pretty strongly masculine, more than "guy"

@packbat Male, moderately.

@packbat If used to indicate an academic position or membership of an organisation, no (or only very weakly). If used in a less formal sense to replace "person", then yes, strongly masculine.

@packbat My answer would be "not necessarily." Just like the collective noun "guys" can refer to all males, a mixed group of males and females, or even all females. But there is no question that the original meaning of both words referred exclusively to males.

@packbat Variable by context. Academic position: no. "Fellow [descriptors]": no. "A(n) {fine, upstanding, young, rude, nasty, etc} fellow": Very masc.

@packbat
My fellow Americans, the word "fellow" implies masculine with slightly less strength as the word "guy" does.

@packbat Fairly strongly masculine.

@packbat As an adjective, ungendered; as a noun, an informal synonym for man.

33yo Californian

@packbat
No gender to me, I associate it with "medical fellow" or a resident doctor/ researcher.