(1) An endangered, striped marsupial: ---bat.
Answer: Numbat.
(2) An uncomplimentary remark: -----bat
Answer: Brickbat.
(3) A typographical symbol: ----bat
Answer: Dingbat.
(4) Jewish sabbath: ----bat.
Answer: Shabbat.
(5) It eats roots and leaves: ---bat.
Answer: Wombat.