linger

linger [lɪŋgə*]
to remain somewhere longer than usual or expected;
linger on to persist; to endure;
linger over sth. to hesitate; to dither

useful resources:

http://www.oxforddictionaries.com/
http://dictionary.cambridge.org/
http://www.wordreference.com/
http://www.merriam-webster.com/