Be down-to-earth.
new word
Basic explanation and detailed explanation
Step on the solid ground. Metaphor is practical and serious.
commendatory sense
Approximate antonym
synonym
Conscientious, well-behaved, realistic and down-to-earth.
antonym
Ambitious, fraudulent, adventurous, boastful, grandiose, vain, castles in the air, armchair strategist, flying in the clouds.
Encyclopedia explanation
Step on the solid ground. Metaphor is practical and serious.