Find out the opposite of “Nimble”.

Nimble : Quick and light in movement or action; agile.

Synonyms
lithe, sprightly, acrobatic, light-footed, nimble-footed, light, light on one's feet, fleet-footed, spry, lively, active, quick, quick-moving, graceful, supple, limber, lissom, flexible, skilful, deft, dexterous, adroit

Antonyms for nimble

airheaded, birdbrained, boneheaded, dumb, dunderheaded, empty-headed, fatuous, vacuous, weak-minded, witless
Source: Merriam-Webster