Crossword

[Barbray]

1. Inconstant

M??able

Cheers

[emmie]

movable

[THECORBYLOON]

Possibly too late but it could be MUTABLE

mutable
adj
changing, interchangeable, changeable, adaptable, alterable, vacillating, variable, volatile, wavering, inconsistent, uncertain, undependable, unreliable, unsettled, ***inconstant,*** fickle, flexible, irresolute, unstable, unsteady, permutable

[Barbray]

Thanks that's the one