both feet on the ground

businesslike constructive down-to-earth efficient factual feasible functional possible practicable pragmatic rational reasonable sane sensible sober workable

applied commonsensical doable empirical experimental handy hard-boiled implicit in action in operation matter-of-fact nuts and bolts operative orderly serviceable solid sound systematic unidealistic unromantic usable utile utilitarian virtual workaday working

excited impossible impractical inefficient irrational unattainable unfeasible unlikely unrealistic unreasonable unsound unworkable

incapable inexperienced unproficient unseasoned unserviceable unskilled untrained useless worthless