Virtuosity intended as the ability of performing a difficult task and making it appear smooth and easy from the outside. So how would you define the inability of making something hard look very simple?
closed as off-topic by FumbleFingers, Helmar, NVZ, Drew, Mitch Sep 19 '16 at 13:24
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "Please include the research you've done, or consider if your question suits our English Language Learners site better. Questions that can be answered using commonly-available references are off-topic." – FumbleFingers, Helmar, NVZ, Drew, Mitch
lacking skill or dexterity, lacking grace or ease in movement, not well planned or designed for easy or effective use (dictionary.com)
I believe maladroitness is the word you are looking for.