Ключевые слова: abc, abnegation, answer, background, blackboard, blank, blankness, board, chalk, chalkboard, classroom, color, declinature, decline, denial, deny, disallowance, disavowal, disclaimer, education, english, flat, gainsay, glass, lacunae, letter, nay, negate, negation, negative, no, pattern, plank, rebuff, refusal, refuse, rejection, replication, reply, repudiation, repulse, repulsion, school, schoolroom, sign, symbol, teaching, text, texture, title, turndown, write,