1. most awkward, heavy, or ungraceful in movement or design
Usage: superlative form of clunky
2. making the loudest dull, heavy sounds
Usage: superlative form of clunky

Examples

• That old washing machine is the clunkiest appliance in our house.
• His dance moves were the clunkiest I’d ever seen.
• The clunkiest car in the parking lot belonged to my grandfather.
• She wore the clunkiest boots to the formal dinner.
• The clunkiest part of the presentation was the technical demonstration.
• This is the clunkiest software interface I’ve ever used.