unfast

词形变化

unfasts 三单 unfasting 现在分词 unfasted 过去式 unfasted 过去分词 more unfast 比较级 most unfast 最高级

释义与例句

v.
  1. 1.

    To loose; release.

    及物
adj.
  1. 1.

    Not fast or safe; not secure.

词源

From Middle English unfasten, unvesten, onfesten, equivalent to un- + fast.

来源：wiktionary