That's Life Competition No. 50

 1.     M
 2.     18
 3.     Anticlimatic
 4.     Stapler
 5.     White Christmas
 6.     Bells
 7.     Goodwill
 8.     Eavesdrop
 9.     Cupid
10.     Ginger Rogers
11.     73                        Corrected - Thanks Arran
12.     Level
13.     Carolling
14.     A Passage To India
15.     Candy Cane
16.     X
17.     Seafood
18.     Footy
19.     Nativity
20.     Advent
21.     Stocking Stuffer
22.     Feliz Navidad
23.     Carols
24.     Merry
25.     Festive
26.     Decorate
27.     Occasion
28.     2
29.     Par
30.     Beard                      Corrected - Thanks Arran
31.     Cheer
32.     Frosty The Snowman
33.     Anise                       Would appreciate a check on this one - Thanks for confirming Arran
34.     Presents
35.     M
36.     Sleigh
37.     U R S T
38.     L
39.     Yo-Yo
40.     Excuse Me
41.     Yule
42.     Chimney
43.     4
44.     Rhubarb
45.     Eat                          Could also be CAT as they both work
46.     D
47.     Child
48.     Tim Allen
49.     Hire                          Thanks Arran
50.     73
51.     Pink
52.     C E
53.     Grace
54.     5D                            Thanks Arran
55.     Apron
Pet in a Puzzle (Page 19)     1

Best Of Luck Everyone

Thanks Arran  

I am a little confused on how you got Beard for Number 30 however as there is nothing that pairs up with Gift to remove it from the list. The pairings I came up with were as follows:

Together - Apart
North - South
Sweet - Sour
Summer - Winter
Boiling - Freezing
Decorated - Unadorned
Jolly - Gloomy

Leaving Inability - Beard - Gift

thanks Rosie, that makes sense when looking at it that way. cheers