"soberer" in the adjective sense
1. sober
not affected by a chemical substance (especially alcohol)
2. grave, sedate, sober, solemn
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"
3. drab, sober, somber, sombre
lacking brightness or color dull
"drab faded curtains"
"sober Puritan grey"
"children in somber brown clothes"
4. unplayful, serious, sober
completely lacking in playfulness
Source: WordNet® (An amazing lexical database of English)
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