Dedication: 3/15/05

tondeo, tonsus: clip, shear

tonsorial, tonsure

tono: thunder; attono: stun

astonish, astonishing, astonishingly, astonishment, astound, astounding, detonate, detonation, detonative, detonator, intonation, intone, intonement, stun, stun gun, stunning, tornado

N.B. Tornado may be derived from either tono or torqueo.
tonsillae: tonsils

tonsil, tonsilectomy, tonsilitis, tonsilolith

-tor: male who performs an action

benefactor etc.

torpeo: be numb; torpor: numbness; torpidus: numb

torpedinoid, torpedo, torpedo boat, torpedo-catcher, torpedo-destroyer, torpedo-juice, torpefy, torpent, torpex, torpid, torpidity, torpidly, torpor, torporific, torporize

torqueo, tortum: twist; tormentum: artillery

contorsion, contorsive, contort, contorted, contortedly, contortion, contortionism, contortionist, contortive, detorsion, distort, distorter, distortion, distortive, distortor, extorsion, extorsive, extort, extortion, extortionary, extortionate, extortionately, extortioner, extortionist, extortive, levotorsion, nasturtium, overtortured, retort, self-torment, torch, torchbearer, torchless, torchlight, torchwood, torcular, torment, tormentor, tormentress, tormentry, tormina, tornado, torquate, torque, torquemeter, torques, torquey, torsada, torsade, torsal, torse, torsibility, torsile, torsiograph, torsiometer, torsion, torsional, torsive, torsocclusion, tort, torticollis, tortie, tortile, tortillon, tortilly, tortious, tortoise, tortoise shell, tortricid, Tortrix, tortuosity, tortuous, tortuously, torturousness, torture, torturer, torturous, trousseau, truss, waist-torque, water torture

N.B. OED says derivation of torch from torqueo is not absolutely certain.

Perhaps tornado is derived from tono; perhaps from torqueo.

AHD derives truss from torqueo; OED does not.