Which word means 'the expression of approval or favorable opinion, praise; official approval'?

Which word means 'a combination, union, or merger for some specific purpose'?

Which word means 'to draw forth, bring out from some source (such as another person)'?

Which word means 'decline, deterioration; a condition or period of decay; excessive self-indulgence'?

Which word means 'used so often as to lack freshness or originality'?

Which word means 'a hint, indirect suggestion, or reference (often in a derogatory sense)'?

Which word means 'to plead on behalf of someone else; to serve as a go-between in a disagreement'?

Which word means 'to attempt to dissuade someone from a course or decision by earnest reasoning'?

Which word means 'a gap, opening, break (in the sense of having an element missing)'?