When a group is on the larger side, it may be called a bevy. Bevy's earliest use in English was as a collective noun for quail (behold, the bevy of quail!), similar to a covey of partridges. When in reference to people, bevy has historically described groups of women. While you will still encounter these specific uses, the word bevy has resisted being pigeonholed. The term is now widely used in a general sense to emphasize abundance in number, and can be found in reference to just about any type of assemblage or collection.
The surefooted adjective unequivocal describes things that are unambiguous or have only one possible meaning or interpretation: unequivocal proof is proof that cannot be refuted or misinterpreted. Unequivocal also describes things that are absolute or not subject to conditions or exceptions. To have someone’s unequivocal support is to know that they will be there for you no matter what, no strings attached.
Without a doubt, nice is a well-liked adjective. So much so, that it's used almost to the point of cliché! When you are looking for something with a little more heart, try cordial. Cordial means courteous and gracious. It comes from the Latin noun meaning "heart." Cordial is commonly used to describe social interactions, as meetings and greetings. When used to describe relations of a professional nature, it skews more toward the head than the heart, connoting politeness and civility.