sadden

the word 'sadden' is a transparent formation from the adjective 'sad' with the addition of the old english verbal suffix '-en'. the root 'sad' itself has undergone a significant semantic shift from its old english meaning of "full, sated, weary" to its modern sense of "sorrowful." this evolution reflects a metaphorical connection between physical heaviness or weariness and emotional weight. the suffix '-en' is a productive morpheme in english, consistently used to create verbs meaning "to make or become" the quality of the base adjective, as seen in 'brighten', 'weaken', and 'deepen'.

Structure: sad (sorrowful) + en (verb suffix) sad (from old english sæd meaning "sated, weary, heavy," of germanic origin). en (a verb-forming suffix from old english -nian, used to form verbs from adjectives).