1) Abysmal 2) Deep 3) Infinite 4) Limitless 5) Unclothed 6) Unlimited 1) Cavernous 2) Deep 3) Extremely deep 4) Having no bottom 5) Immeasurably deep 6) Infinite 7) Lacking a bottom 8) Like some pits 9) Profound 10) Subterranean 11) Unfathomable 12) Without bounds 13) Yawning 
• (a.) Without a bottom; hence, fathomless; baseless; as, a bottomless abyss.
Bot'tom·less adjective Without a bottom; hence, fathomless; baseless; as, a bottomless abyss. 'Bottomless speculations.' Burke. 
[adj] - having no bottom 2. [adj] - having no apparent limits or bounds 3. [adj] - too deep for understanding 4. [adj] - extremely deep 5. [adj] - unclothed especially below the waist or featuring such nudeness
adjective having no bottom; `bottomless pajamas consisting simply of a long top opening down the front`
lacking a bottom. · immeasurably deep. · unfathomable; mysterious: a bottomless problem. · without bounds; unlimited: He seems to have a bottomless supply of money. · without basis, cause, or reason: a bottomless accusation. · nude or nearly nude below as well as above the waist: bottomless dancers. · featuring bottomle...