playing hard ball

big-deal big-time blue-chip chief critical crucial exceptional foremost four-star front-page great high-power important impressive influential large leading major prominent significant

sincere sober solemn somber thoughtful

close constant firm grave intent stable steady

determined fixed for real mean business meaningful no-fooling no-nonsense 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

chief grave great heavy major professional

big-time blue-chip critical crucial exceptional four-star front-page high-power major-league serious strictly business

happy inconsequential insignificant little minor small trivial unimportant unskilled

big-league big-time blue-chip chief critical crucial exceptional four-star front-page grave great heavy high-power major notable pre-eminent serious strictly business

calculated deliberate determined intense persistent resolute strong-willed

be out for blood bent bound dead set on decided firm fixed intent mean business obstinate positive purposive settled single-minded stalwart staunch steadfast steady stubborn tenacious undeviating unfaltering unwavering

irresolute weak

aimless thoughtless undetermined unplanned wanton

dangerous deep difficult far-reaching grievous important major meaningful severe significant tough urgent

arduous fateful fell formidable grave grim hard heavy laborious meaning business menacing momentous no joke no laughing matter of consequence operose out for blood pressing smoking sobering strenuous strictly business threatening ugly unamusing unhumorous worrying

calm easy facile friendly insignificant little meaningless minor small trivial unimportant worthless

flippant funny happy light unserious