sizable (adj.)
- astronomical
- awesome
- big
- boundless
- bulky
- bumper
- colossal
- considerable
- cosmic
- enormous
- extensive
- galactic
- gigantic
- good
- goodly
- grand
- great
- healthy
- hefty
- huge
- immeasurable
- immense
- infinite
- king-size
- large
- large-scale
- major
- mammoth
- man-sized
- massive
- monstrous
- monumental
- mountainous
- numerous
- outsize
- overgrown
- prodigious
- respectable
- sensible
- smart
- spacious
- stupendous
- substantial
- tall
- tidy
- titanic
- tremendous
- vast
- voluminous
- weighty