1) Burked 2) Concealed 3) Covered up 4) Held in check with difficulty 5) Hushed-up 6) Quelled 7) Quenched 8) Squelched 9) Unreleased Found on https://www.crosswordclues.com/clue/suppressed
A part of a book that was held back after being published; i.e, a chapter that existed in the first printing, does not appear in the second. It also can describe an entire publication withdrawn from circulation, because of various reasons including political, legal, or perhaps the belated regrets of the author. Found on http://www.alibris.com/glossary/glossary-books
a tree condition characterized by low growth rate and low vigor as a result of competition with overtopping trees. See overtopped. Found on https://www.encyclo.co.uk/local/22458