thumb-sucker
[ thuhm-suhk-er ]
/ ˈθʌmˌsʌk ər /
noun
a person who habitually sucks a thumb.
OTHER WORDS FROM thumb-sucker
thumb-suck·ing, nounWords nearby thumb-sucker
thumb index,
thumb knot,
thumb one's nose,
thumb piano,
thumb-index,
thumb-sucker,
thumber,
thumbhole,
thumbkin,
thumbnail,
thumbnail sketch