adjective. Careful in thought, full of concern, or restrained and dignified in manner; somber or grave.

adjective. undefined

adjective. Requiring or carried out with careful thought or concern.

adjective. Intended for sophisticated people.

adjective. Deeply interested or involved.

adjective. undefined

adjective. Concerned with important rather than trivial matters.

adjective. Not joking or trifling.

adjective. Of considerable size or scope; substantial.

adjective. undefined

adjective. Being of such import as to cause anxiety.

adjective. Not easily answered or solved.

Grave in feeling, manner, or disposition; solemn; earnest; not light, gay, or volatile; of things, springing from, expressing, or inducing gravity or earnestness of feeling.

In earnest; not jesting or making pretense.

Important; weighty; not trifling.

Attended with danger; giving rise to apprehension: as, a serious illness.

Deeply impressed with the importance of religion; making profession of or pretension to religion.

Synonyms Solemn, etc. See grave.

1 and Sedate, staid, sober, earnest.

Great, momentous.

adjective. Grave in manner or disposition; earnest; thoughtful; solemn; not light, gay, or volatile.

adjective. Really intending what is said; being in earnest; not jesting or deceiving.

adjective. Important; weighty; not trifling; grave.

adjective. Hence, giving rise to apprehension; attended with danger.

adjective. Without humor or expression of happiness; grave in manner or disposition; earnest; thoughtful; solemn.

adjective. Important; weighty; not trifling; leaving no room for play; needing great attention; critical.

adjective. Really intending what is said; being in earnest; not jesting or deceiving; meaningful.

adjective. completely lacking in playfulness

adjective. concerned with work or important matters rather than play or trivialities

adjective. requiring effort or concentration; complex and not easy to answer or solve

adjective. of great consequence

adjective. appealing to the mind

adjective. causing fear or anxiety by threatening great harm

"Pávlovna, there are things which must be investigated and fully understood before they can be talked about, things too serious, too serious  ..."

jesting  trifling  unimportant  

dangerous  deep  important  matter-of-fact  sober  

critical  difficult  earnest  grave  hard  

deleterious  delirious  imperious  mysterious  

further  real  severe  significant  

abandoned  acute  afire  alarming  ardent