A crossword clue for "medium" that is 7 letters long could be "average." This term often refers to the norm or midpoint in a set of data or characteristics, fitting the definition of medium in various contexts. Another possible clue could be "mediator," which can imply someone who acts as a middle ground in disputes.
Medium in seven letters> average
agilely
Egghead.
charted
Bidfair is a synonym for seems possible.
Unclasp will fit.
cold hearted
rhombus
There are very many words that may be spelt in this way, if you are searching for an answer in a crossword, what is the clue.
rallied
willing
finesse or ability