chapter
it was a sad chapter in my life

dilemma
to be in a sad dilemma

faced
sad-faced

frame
to be in a sad frame of mind

pickle
...in a sad pickle / to be in a sorry pickle

piece
to make a sad piece of work of it

plight
...in a sad plight / to be in a sorry plight

prospect
that is a sad prospect indeed

put on
he put on a sad look

sad
it was a sad day for him

SAD
Seasonal Affective Disorder

Sad Flycatcher
Myiarchus barbirostris

say
sad to say

sight
a sad sight

touch
her sad story touched everybody deeply