The phrase "a slightly tipsy" is correct and usable in written English.
It can be used to describe someone who has consumed a small amount of alcohol and is feeling a bit intoxicated, but not to the point of being drunk.
Example: "After a couple of glasses of wine, she felt a slightly tipsy and more relaxed than usual."
Alternatives: "a little drunk" or "somewhat inebriated".
But when I slated a slightly tipsy performance she once gave, the artist wrote to tell me my review should have appeared in the obituaries section.
"Why did you get me different software?" Nolan proceeded to stumble through his explanation, but carefully, like a slightly tipsy person through a well-marked minefield.
In a nod to race relations in the age of Obama, a slightly tipsy Mary babbles during a dinner party that "salons need to integrate," provoking arched eyebrows from Stacie, seated next to the prominent black hair stylist Ted Gibson.
Bearing witness was the scene all around her in the Members' Room, where a slightly tipsy Vic Damone-ish lounge singer was regaling 30 or so of the club's biggest spenders.
But it is the flushed face of a slightly tipsy man in a large black hat who stares directly, if blearily, toward us from the upper middle of the picture that provides its emotional still point and an unexpectedly sharp edge of melancholic consciousness.
This year, in performances today, next Sunday and on Christmas, it offers the Baroque program, presumably including Charpentier's almost comically morose setting of the famous "folia" tune, which other Baroque composers put to riotous use, and the anonymous "Old Yeare Now Away Is Fled," "Greensleeves" by another name and in a slightly tipsy mode.
I attempt to walk on to the pier, but it is roped off due to the piercing winds, thwarting my attempts to look like a male, slightly tipsy version of The French Lieutenant's Woman.
Entourage is like an enthusiastic puppy, slightly tipsy on beer, humping on a stripper's leg, but desperate to please nonetheless.
I was wondering if this is the longest pause one player has made between participating again in the final phase of the same competition?" "I'm sat here watching the Republic of Ireland opening their Euro campaign, and a question popped into my slightly tipsy mind," writes Rob Marriott.
I forced myself to put down the glass, especially after one member of our group acknowledged, with a giggle, that she was slightly tipsy.
And I only dance with my husband when I am slightly tipsy - a state which seems to cut down dramatically on my relentless stepping on his toes as he attempts to twirl me around.
