Here are all the answers to Wordscapes Level 1664 in the Icy pack, Frost group. The letters that players must unscramble in this level are EUFRTLF. This puzzle has 10 words as its answer and 31 bonus words.
eff, eft, elf, fer, fet, feu, flu, fluter, fur, furl, let, leu, luff, lure, lute, ref, reft, ret, rue, ruff, ruffe, rule, rut, teff, tel, tref, true, truffe, tuff, tule, ute.