That is the correct spelling of "sober" (serious, or not intoxicated).
An analogy or comparison of the two words sober and serious finds them to be synonyms. However, the word sober has other meanings, such as the lack of being inebriated, that serious is not synonymous with.
impressive:grand
impressive:grand
focused. Just as being sober implies being clear-headed, serious implies being focused and attentive.
The opposite of sober (unimpaired) would be inebriated, drunk, high, or intoxicated. The opposite of sober (serious) would be frivolous, flippant, or farcical.
sad,serious,sober,solemn, tragic, unfunny
Grave, sober, sincere, important, weighty
ceremony, gravity, sobriety
The opposite of sober (unimpaired) would be inebriated, drunk, high, or intoxicated. The opposite of sober (serious) would be frivolous, flippant, or farcical.
solemn, somber, sober, stern any of those?
Grave, stern, sober, heavy, major, vital, acute.