no-fooling

sincere sober solemn somber thoughtful

close constant firm grave intent stable steady

determined fixed for real mean business meaningful no-nonsense playing hard ball resolute resolved sedate staid weighty

changeable inconstant irresolute loose unfixed unstable unsteady untrustworthy wavering weak wobbly

flippant insincere thoughtless trivial unconcerned unenthusiastic unimportant unpassionate unpurposeful unserious unthoughtful

candid earnest for real forthright genuine heartfelt outspoken real serious true trustworthy

24-carat aboveboard actual artless bona fide dead-level dear devout faithful frank guileless honest-to-God honest-to-goodness like it is meant natural no-nonsense on the level on the line on the up and up open plain pretensionless regular righteous saintly square sure-enough true-blue unaffected undesigning undissembled unfeigned unpretentious up-front wholehearted

counterfeit deceitful devious dishonest false flippant insincere invalid untrustworthy

tricky

dignified earnest funereal glum intense pensive portentous reflective sedate sober somber stern thoughtful weighty

austere brooding cold sober deliberate downbeat grave heavy matter of life and death moody no-nonsense staid

cheerful excited happy ignorant joyful light lively thoughtless trivial unimportant unthoughtful

frivolous funny insignificant laughing ordinary unimpressive unsacred usual