incurvate

verbs

bend inwards
"The body incurvates a little at the back"
is derived from
is derived from
is a type of (narrower)
form a curve
"The stick does not bend"
cause to curve inward
"gravity incurvates the rays"
is derived from
is derived from
is a type of (narrower)
cause (a plastic object) to assume a crooked or angular form
"bend the rod"; "twist the dough into a braid"; "the strong man could turn an iron bar"

adjectives

bent into or having an inward curve