extemporize

• POS: Verb (usu participle)
• HYPHEN: ex=tem=po=rize

CIDE DICTIONARY

extemporize, v. i. 

 To speak extempore; especially, to discourse without special preparation; to make an offhand address.  [1913 Webster]

extemporize, v. t. 

 To do, make, or utter extempore or off-hand; to prepare in great haste, under urgent necessity, or with scanty or unsuitable materials; as, to extemporize a dinner, a costume, etc.  [1913 Webster]
"Themistocles . . . was of all men the best able to extemporize the right thing to be done."  [1913 Webster]
"Pitt, of whom it was said that he could extemporize a Queen's speech"  [1913 Webster]

OXFORD DICTIONARY

extemporize, v.tr. (also -ise) (also absol.) compose or produce (music, a speech, etc.) without preparation; improvise.

Derivative

extemporization n.

THESAURUS

extemporize

ad-lib, be caught napping, be surprised, be taken unawares, be unprepared, cook up, dash off, do offhand, fake, go off half-cocked, have no plan, improvisate, improvise, jury-rig, knock off, lash up, make up, play by ear, scrap the plan, strike off, throw off, throw together, toss off, toss out, vamp, whip up, whomp up, wing it

ROGET THESAURUS

extemporize

Impulse

VB flash on the mind, say what comes uppermost, improvise, extemporize, give an impetus, impel, push, start, give a start to, set going, drive, urge, boom, thrust, prod, foin, cant, elbow, shoulder, jostle, justle, hustle, hurtle, shove, jog, jolt, encounter, run against, bump against, butt against, knock one's head against, run one's head against, impinge, boost, bunt, carom, clip y, fan, fan out, jab, plug, strike, knock, hit, tap, rap, slap, flap, dab, pat, thump, beat, blow, bang, slam, dash, punch, thwack, whack, hit hard, strike hard, swap, batter, dowse, baste, pelt, patter, buffet, belabor, fetch one a blow, poke at, pink, lunge, yerk, kick, calcitrate, butt, strike at, whip, come into a collision, enter into collision, collide, sideswipe, foul, fall foul of, run foul of, telescope, throw.

Nonpreparation

VB be unprepared, want preparation, lack preparation, lie fallow, s'embarquer sans biscuits, live from hand to mouth, dismantle, undress, extemporize, improvise, ad lib.