未決定

みけってい

noun

•

undecided

未	un-, not yet, hitherto, still, even now, sign of the ram, 1-3PM, eighth sign of Chinese zodiac
決	decide, fix, agree upon, appoint
定	determine, fix, establish, decide

きゅうか

けいかく

みけってい

Our plans for the vacation are still up in the air

みけってい

Let it hang

けいかく

いま

みけってい

As yet, the project is in the air