pastry
acidic
biting
barbed
modern
alcove
apogee
surely
Remote?
A six-letter word for "tart" is "sourly." It describes a taste that is sharp, acidic, or tangy, similar to the flavor profile of a tart. Another option could be "aceric," which relates to something that has a sour taste.
A six letter word that has the same meaning of 'rue' is regret.
a six letter word meaning not attractive: SO UGLY!
Oblong is a six-letter word meaning egg-shaped.
Minnow is a six letter word meaning small fish.
Safety... "Safety" is a 6 letter word
wedded
Sylvan.
Worship?
modern
alcove
tittle