Root words - sol, mon(o)

Front

A card game played alone

Back

Solitaire

Front

Only one:

Back

sole

Front

Feeling down, alone, or sad

Back

Desolate

Front

Rule by a single ruler (King/Queen)

Back

monarchy

Front

Place for religious individuals to live and study

Back

monastery

Front

one single tone

Back

monotonous

Front

Design using letters: ADJ

Back

monogram

Front

one single color

Back

monochromatic

Front

Performing or singing music alone

Back

solo

Front

Speaking while alone

Back

Soliloquy