Well you have been a little economical with the clue. But try one of these.
abreact, absence, aldercy, appeach, ardency, beseech, cadence, cadency, cogence, cogency, dareece, decency, defence, driesch, escence, essence, expence, eysenck, faience, fayence, fluence, fluency, impeach, ionesco, latence, latency, licence, lucency, mayence, moresco, offence, oriency, patency, potence, potency, pudency, quiesce, rebecca, recency, regence, regency, remercy, reteach, saveock, science, screech, screich, senesce, silence, squelch, stretch, tedesca tedesco, terence, tumesce, unperch, unteach, urgence, urgency, valence, valency and vivency.
Regs, Barry.