| stupid(noun, adjective, dull, simple, fool) |
| subnormal(adjective, dull, simple, limited) |
| sway(verb, change, alter, swing, rock) |
| swing(verb, move, change, alter, transfer) |
| switch(verb, move, change, remove, turn) |
| take turns |
| temperamental(adjective, careless, lively, active, unstable) |
| ticklish(adjective, careless, lively, active, unstable) |
| toy |
| transfer(verb, move, change, remove, turn) |
| transform |
| transmogrify(verb, move, change, remove, turn) |
| transpose(verb, move, change, remove, turn) |
| turn(verb, move, change, remove, alter) |
| turn around(verb, expression, move, change, remove) |
| turn the tables(verb, expression, idiom, move, change) |
| underachieving(adjective, dull, simple, limited) |
| undulate(verb, change, alter, shake, swing) |
| unequable(adjective, changeable, fickle, volatile, wavering) |
| unpredictable(adjective, careless, lively, active, unstable) |