serious minded (adjective) steady: balanced, faithful in mind
Sinonime: allegiant,
ardent,
calm,
constant,
cool,
dependable, equable,
fast, imperturbable,
intense, levelheaded, liege,
loyal, poised,
reliable,
reserved,
resolute,
sedate, self-possessed,
sensible,
serene, serious-minded,
settled, single-minded,
sober,
staid,
staunch,
steadfast, unswerving,
unwavering, wholehearted
Antonime: imbalanced, unfaithful,
untrustworthy