[denakerebanaranai (P); denakerebaikenai ; denakerebanaranu](exp) (See である, なければならない) having to be; must be; should be; ought to be; (P)[Add to Longdo]
[ないといけない, naitoikenai](exp, adj-i) (1) (uk) (See 無きゃいけない) (after negative base of verb) have to (verb); must (verb); (2) (esp. 無いといけない) is indispensable; absolutely necessary; (P)[Add to Longdo]
[なきゃいけない(無きゃいけない)(P);なくてはいけない(無くてはいけない)(P), nakyaikenai ( naki yaikenai )(P); nakutehaikenai ( naku tehaikenai )(P)](exp) (1) (uk) cannot do without something; indispensable; absolutely necessary; (2) (after negative base of verb) have to do; (P)[Add to Longdo]