AHA - An exclamation of understanding, realization, invention, or recognition.
HAT - A covering for the head, often in the approximate form of a cone or a cylinder closed at its top end, and sometimes having a brim and other decoration.
HAY - Grass cut and dried for use as animal fodder.
PAT - The sound of a light slap or tap with a soft flat object, especially of a footstep.
PAW - The soft foot of a mammal or other animal, generally a quadruped, that has claws or nails; comparable to a human hand or foot.
PAY - To give money or other compensation to in exchange for goods or services.
TAP - A tapering cylindrical pin or peg used to stop the vent in a cask; a spigot.
WAY - A road, a direction, a (physical or conceptual) path from one place to another.
WHY - For what cause, reason, or purpose.
APT - Suitable; appropriate; fit or fitted; suited.
THY - That belongs to thee; the possessive form of thou.
AAH - Indication of amazement or surprise or enthusiasm.
PATH - A trail for the use of, or worn by, pedestrians.
WHAT - Which thing, event, circumstance, etc.: used interrogatively in asking for the specification of an identity, quantity, quality, etc.
THAW - To melt, dissolve, or become fluid (specifically by gradual warming); to soften; said of that which is frozen.
APATHY - Complete lack of emotion or motivation about a person, activity, or object; depression; lack of interest or enthusiasm; disinterest.
PATHWAY - A footpath or other path or track.