solemn (
http://definr.com/solemn)
adj 1: dignified and somber in manner or character and committed to
keeping promises; "a grave God-fearing man"; "a quiet
sedate nature"; "as sober as a judge"; "a solemn
promise"; "the judge was solemn as he pronounced
sentence" [syn:
grave,
sedate,
sober]
2: characterized by a firm and humorless belief in the validity
of your opinions; "both sides were deeply in earnest, even
passionate"; "an entirely sincere and cruel tyrant"; "a
film with a solemn social message" [syn:
earnest, {in
earnest(p)},
sincere]