Synonyms for serious

Similarity of adj serious

6 senses of serious

Sense 1:

serious (vs. frivolous)
earnest, sincere, solemngrave, sedate, sober, solemnoverseriousrealthoughtful, serious-mindedsoberingsolid

Sense 2:

serious
important (vs. unimportant), of import

Sense 3:

dangerous, grave, grievous, serious, severe, life-threatening
critical (vs. noncritical)

Sense 4:

good, serious
intellectual (vs. nonintellectual)

Sense 5:

unplayful (vs. playful), serious, sober

Sense 6:

serious
difficult (vs. easy), hard