All references of IT being a "female"
Before they find out that IT is a female, the Losers Club do not refer to IT as a "bitch" which I find to be interesting. It is only after they learn of its female spider form do they use this word as an insult towards IT.
"The writer's woman had put out one powerful, horrified thought — OH DEAR JESUS IT IS FEMALE — and then all thoughts ceased. She swam in the deadlights" (635).
"That's Its egg-sac, Ben thought, and his mind seemed to shriek at the implication. Whatever It is beyond what we see, this representation is at least symbolically correct: It's female, and It's pregnant . . . It was pregnant then and none of us knew except Stan, oh Jesus Christ YES, it was Stan, Stan, not Mike, Stan who understood, Stan who told us . . . That's why we had to come back, no matter what, because It is female, It's pregnant with some unimaginable spawn . . . and Its time has drawn close (655).
Right after figuring out Pennywise is female: "Ben heard Bill bellow: 'You k-k-killed my brother, you fuh-fuh-fucking BITCH!" (655).
"Let's get her, Haystack!' Richie screamed. 'Chüd! Chüd!" (656).
"Bev shrieked again and put her hands to her ears as if to shut out that fading voice. The Spider's stinger rose and Richie bolted at It, a grin spreading up toward his ears, and he called out in his best Irish Cop's Voice: 'Here, here, me foine girl! Just what in the hell do ye think ye're doin? Belay that guff before I snatch yer pettiskirts and snap yer smithyriddles!" (664).
"Yes! Bill cried, choking, drowning. Yes! Try this, you bitch! TRY THIS ONE OUT! DO YOU LIKE IT? DO YOU LOVE IT? DO YOU?" (684).
It also almost becomes a name in this scene, more so than in the rest of the book since the Losers Club realized it was female. "It" is usually capitalized.
It's kind of fun to have a female antagonist. It's so rare. Technically its genderless in its deadlights form but in its second to true form, in spider form, it is a female. The rest of its shape shifts are usually male, probably to fit the narrative it is pushing. A male clown was much more common in the 1800s than a female one anyways.
Anyway ppl will be deniers but I am happy to have this.
There may be some portions I may have missed. If you find anymore, let me know. I just finished this book yesterday so everything is still fresh in my memory.