The Oxford Thesaurus An A-Z Dictionary of Synonyms INTRO ...

so so adj. mediocre, all right, average, undistinguished, passable,
not (too) bad or good, adequate, fair (to middling), middling,
indifferent, ordinary, tolerable, comme ci, comme ‡a, modest:
Sabrina, whose singing is just so so, will never be a star.
soul n. 1 (vital) spirit or force, being, (inner or true) self,
essence, psyche, heart, mind, intellect, reason, anima: He
finally surrendered, body and soul. 2 person, individual, man,
woman, mortal, (human) being: I won't tell a soul about our
conversation. What a sweet old soul she is! 3 incarnation,
embodiment, personification, typification, essence,
quintessence: You can count on me as the soul of discretion. 4
emotion, feeling, sentiment, sincerity, fervour, ardour, warmth,
dynamism, vivacity, energy, spirit, vitality, force: Alice puts
a lot of soul into her singing, and that comes across to the
audience.
soulful adj. sincere, deep, profound, moving, emotional, warm, ardent,
intense, fervent, expressive: The lovers exchanged soulful
looks.
sound° n. 1 tone; noise; din; cacophony; report: This piano has a
tinny sound. We could hear the sound of laughter from below. I
heard nothing over the sound of the crowd. Sounds of gunfire
echoed in the valley. 2 ring, tone, impression, characteristic,
quality, effect, aspect, look: I didn't like the sound of that
remark. 3 hearing, range, earshot: Anyone within the sound of
his voice could tell that he was angry.
--v. 4 resound, reverberate, echo, resonate: The noises sound
very close. 5 seem, appear, look; strike one, give one the
impression or feeling or sense (that); resemble, sound or seem
or look like: It sounds as if you don't want to come to my
party. That sounds like Russian to me. 6 ring, (be) activate(d),
(be) set or touch(ed) off, signal: Anyone walking into the room
sounds the alarm. The alarm sounds when the beam is broken. 7
Sometimes, sound out. articulate, pronounce, enunciate, utter;
voice, vocalize: I was taught to speak clearly, to sound each
consonant and vowel. 8 Sometimes, sound out or off. shout
(out), cry out, yell (out): Sound out those numbers loud and
clear! 9 sound off. vituperate, complain, bluster, grumble,
Slang bitch: Today Mr Morrison was again sounding off about the
service in the caf‚.