Sappy

He was a good deal of a character, and much better company than the sappy literature he was selling.

Source: wiktionary

To himself, already beginning to resent the new employer as all that morning he had been resenting the old one, Dr. Planish groaned, “He’s getting saintly on me! A careerist in holiness! I'll never be happy till I've got an organization where I’m sole boss—unless it’s one run by a fellow like Colonel Marduc, who has real brains and power—and cash!—and not a lot of sappy sentimentality like Vesper or psychopathic malice like Sneaky Sandy—Oh dear!”

Source: wiktionary

It was a sappy love song, but it reminded them of their first dance.

Source: wiktionary

‘Torches are made to light, jewels to wear, Dainties to taste, fresh beauty for the use, Herbs for their smell, and sappy plants to bear: Things growing to themselves are growth’s abuse: Seeds spring from seeds and beauty breedeth beauty; Thou wast begot; to get it is thy duty.

Source: wiktionary