expatiation

elaboration

addition augmentation boost buildup deepening development enlargement exaggeration expansion extension intensification lengthening magnification padding raising strengthening stretching widening

boosting fleshing out heightening supplementing upping

abridgment compression decrease lessening reduction shrinkage

abridgement condensation contraction shortening

lecture

allocution declamation descant discourse disquisition dissertation epilogue exhortation harangue homily monologue oration peroration recitation screed sermon spiel

chalk talk prelection

listening silence