ART - Human effort to imitate, supplement, alter, or counteract the work of nature.
LAY - To place down in a position of rest, or in a horizontal position.
RAT - A medium-sized rodent belonging to the genus Rattus.
RAY - A beam of light or radiation.
TAR - A black, oily, sticky, viscous substance, consisting mainly of hydrocarbons derived from organic materials such as wood, peat, or coal.
TRY - To attempt. Followed by infinitive.
ALT - A state of excitement, conveyed by a high pitched voice.
LAT - A Latvian coin and national monetary unit.
TART - Sharp to the taste; acid; sour.
TRAY - Trouble; annoyance; anger.
ARTY - Pretending to artistic worth; high-flown.
RATTY - Similar to a rat; ratlike.
TARTLY - In a tart manner; sourly or bitterly.