1. Tested and proved to be reliable
   - tested, tried, tried and true

See also: dependable, reliable

• giant hives
• giant hornet
• giant hyssop
• giant kangaroo
• giant lizard
• giant moa
• giant northwest shipworm
• giant panda
• giant perch
• giant petrel
• giant pigfish
• giant potato creeper
• giant puffball
• giant red paintbrush
• giant reed
• giant ryegrass
• giant salamander
• giant scallop
• giant schnauzer
• giant scrambling fern
• giant seaperch
• giant sequoia
• giant silkworm
• giant silkworm moth
• giant slalom