She smiled endearingly at the puppy.

Her kindness endears her to everyone she meets.

She endeared herself to everyone with her kind and caring nature.

She showered him with endearments.

He endeavoureth to achieve his goals.

The poem is written in an endecasyllable.

Her endearingness made everyone love her.

Thou endeavourest to achieve greatness.

His endeavourment to succeed in his career is truly inspiring.

His endeavorment to climb Mount Everest was a testament to his determination and perseverance.