having little or no weight or apparent gravitational pull; light; "floating freely in a weightless condition"; "a baby bat...fluffy and weightless as a moth"; "jackets made of a weightless polyester fabric"
(sometimes followed by `to') meeting the requirements especially of a task; "she had adequate training"; "her training was adequate"; "she was adequate to the job"
about average; acceptable; "more than adequate as a secretary"
enough to meet a purpose; "an adequate income"; "the food was adequate"; "a decent wage"; "enough food"; "food enough"