غارَ: خَسَفَ، اِنْخَسَفَ to sink, sink down, sink in, fall in, cave in, collapse, go down, subside, give way

غارَ في: دَخَلَ، غَاصَ to penetrate (into) ; to plunge into, dive into

غارَ مِنْ to be jealous of

غارَ على to protect jealously, be jealous of or for, be vigilant in guarding, be watchful in keeping, be solicitous for, show care or concern for, display zeal or enthusiasm for