1. Troublesome.

2. Very.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• petosky,
• pscy,
• persky,
• poske,
• persay,
• pespi,
• pesy,
• peekay,
• plesk,
• peskey,
• perkey,
• petskey,
• persey,
• percky,
• spesk,
• speaky,
• pasny,
• pasky,
• helky,
• paskh

• pekoe,
• peake,
• pes,
• pecs,
• peak,
• peaks,
• peck,
• Peggy,
• Pease,
• peek,
• Pesso,
• peke,
• peaky,
• peg,
• peachy.

The adjective form of the word "pesky" is "peskier".

The plural form of the word "pesky" is "peskies".

The singular form of the word "pesky" remains "pesky".