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Workings

Hint
Add 'one Z', literally.

Answer
Lozenge.

Reasoning
'one Z' + LEG = ONE Z LEG = ONEZLEG > LOZENGE.

Workings

Hint
Look at the first letter of each month.

Answer
199.

Take the first letter of the month, and find its position in the alphabet: S = 19.

Then take the number of letters in the month: September = 9.
January    10 7
February   6 8
March      13 5
April      1 5
May        13 3
June       10 4
July       10 4
August     1 6
September  19 9

Workings

Hint
The first word begins with T.

Answer
Too many cooks spoil the broth.

Reasoning
The saying has been broken down into blocks of 4, the last block has been filled with dummy letters. Each block has then been reversed.

Double-Checking
Start with:
   TOO MANY COOKS SPOIL THE BROTH

Group together:
   TOOMANYCOOKSSPOILTHEBROTH

Split into groups of 4 letters:
   TOOM ANYC OOKS SPOI LTHE BROT H

Add 3 random characters:
   TOOM ANYC OOKS SPOI LTHE BROT HBCY

Reverse each group of 4 letters:
   MOOT CYNA SKOO IOPS EHTL TORB YCBH

Workings

Hint
Count carefully!

Answer
There are 10 letter Fs.

Sometimes the F in 'of' aren't always counted.